[1] The sugar present in DNA is -
A.
Pentose
B.
Xylulose
C.
Hexose
D.
Heptulose
Ans:
Pentose
Explanation :
A monosaccharide is the simplest form of carbohydrate which is composed of carbon, hydrogen and oxygen. The basic formula of the monosaccharide is CnH2nOn. These are considered as the simplest form of sugar. The monosaccharide which has five carbon atom are known as pentose. They have molecular formula C5H10O5. Ribose, fructose and xylose are pentoses. Genetic material such as DNA and RNA contains ribose sugar. It is a five-carbon sugar. It attaches to the nitrogenous bases at the first carbon atom.
[2] Which of the following weeds has been found effective in checking water pollution caused by industrial affluents?
A.
Water hyacinth
B.
Elephant Grass
C.
Parthenium
D.
Both (2) and (3)
Ans:
Water hyacinth
Explanation :
Plants that are resistant to crude oil toxicity such as black poplar and willows, as well as miscanthus grass (elephant grass) have been found to be effective in the remediation of oil polluted soil. Bioadsorbents like Moringo oliefera seeds and Parthenium hysterophorus plants are effective for the removal of industrial pollutants in water.
[3] Itai-itai disease is due to poisoning caused by -
A.
Mercury
B.
Arsenic
C.
Cadmium
D.
Asbestos
Ans:
Cadmium
Explanation :
Itai-itai disease was the name given to the mass cadmium poisoning of Toyama Prefecture, Japan, starting around 1912. Cadmium poisoning can also cause softening of the bones and kidney failure. The cadmium was released into rivers by mining companies in the mountains, which were successfully sued for the damage. Itai-itai disease is known as one of the Four Big Pollution Diseases of Japan.
[4] Two richest known sources of edible protein are -
A.
Meat and eggs
B.
Some algae and other micro-organisms
C.
Soyabean and groundnut
D.
Milk and leafy vegetables
Ans:
Meat and eggs
Explanation :
Meat, fish and eggs are the richest sources of protein. An ounce of meat or fish has approximately 7 grams of protein. A large egg contains 6 grams protein.
[5] The blood vessel carrying blood from the lungs to the heart is -
A.
Hepatic artery
B.
Pulmonary artery
C.
Pulmonary vein
D.
Renal artery
Ans:
Pulmonary vein
Explanation :
The pulmonary veins are large blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart. In humans there are four pulmonary veins, two from each lung. They carry oxygenated blood, which is unusual since almost all other veins carry deoxygenated blood.
[6] In onion food is stored in -
A.
aerial stem
B.
root
C.
scale leaves
D.
bud
Ans:
scale leaves
Explanation :
In onions, the bulbs consist of very short stems with closely packed leaves arranged in concentric circles round the stem. These leaves are swollen with stored food. The inner leaves are fleshy while the outer ones are dry. This is called as tunicated bulb since 'the concentric leaf bases form a complete covering or tunic.
[7] In human body, cartilage is found in -
A.
tognue
B.
nose
C.
chin
D.
nail
Ans:
nose
Explanation :
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the inter- vertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle.
[8] Sickle-cell anemia is a disease caused due to the abnormality in -
A.
white blood cells
B.
red blood cells
C.
thrombocytes
D.
blood plasma composition
Ans:
red blood cells
Explanation :
Sickle cell anemia (sickle cell disease) is a disorder of the blood caused by an inherited abnormal hemoglobin (the oxygen-carrying protein within the red blood cells).
[9] Jaundice is caused due to the infection of -
A.
brain
B.
liver
C.
kidney
D.
spleen
Ans:
liver
Explanation :
Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.
[10] Haemophilia is -
A.
an organic disorder
B.
a metabolic disorder
C.
a genetic disorder
D.
a hormonal disorder
Ans:
a genetic disorder
Explanation :
Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. Haemophilia A (clotting factor VIII deficiency) is the most common form of the disorder, present in about 1 in 5,000- 10,000 male births.
[11] The blood vessel supplying blood to the kidney is -
A.
the renal artery
B.
the hepatic artery
C.
the pulmonary artery
D.
the carotid artery
Ans:
the renal artery
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
A monosaccharide is the simplest form of carbohydrate which is composed of carbon, hydrogen and oxygen. The basic formula of the monosaccharide is CnH2nOn. These are considered as the simplest form of sugar. The monosaccharide which has five carbon atom are known as pentose. They have molecular formula C5H10O5. Ribose, fructose and xylose are pentoses. Genetic material such as DNA and RNA contains ribose sugar. It is a five-carbon sugar. It attaches to the nitrogenous bases at the first carbon atom.
[2] Which of the following weeds has been found effective in checking water pollution caused by industrial affluents?
A.
Water hyacinth
B.
Elephant Grass
C.
Parthenium
D.
Both (2) and (3)
Ans:
Water hyacinth
Explanation :
Plants that are resistant to crude oil toxicity such as black poplar and willows, as well as miscanthus grass (elephant grass) have been found to be effective in the remediation of oil polluted soil. Bioadsorbents like Moringo oliefera seeds and Parthenium hysterophorus plants are effective for the removal of industrial pollutants in water.
[3] Itai-itai disease is due to poisoning caused by -
A.
Mercury
B.
Arsenic
C.
Cadmium
D.
Asbestos
Ans:
Cadmium
Explanation :
Itai-itai disease was the name given to the mass cadmium poisoning of Toyama Prefecture, Japan, starting around 1912. Cadmium poisoning can also cause softening of the bones and kidney failure. The cadmium was released into rivers by mining companies in the mountains, which were successfully sued for the damage. Itai-itai disease is known as one of the Four Big Pollution Diseases of Japan.
[4] Two richest known sources of edible protein are -
A.
Meat and eggs
B.
Some algae and other micro-organisms
C.
Soyabean and groundnut
D.
Milk and leafy vegetables
Ans:
Meat and eggs
Explanation :
Meat, fish and eggs are the richest sources of protein. An ounce of meat or fish has approximately 7 grams of protein. A large egg contains 6 grams protein.
[5] The blood vessel carrying blood from the lungs to the heart is -
A.
Hepatic artery
B.
Pulmonary artery
C.
Pulmonary vein
D.
Renal artery
Ans:
Pulmonary vein
Explanation :
The pulmonary veins are large blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart. In humans there are four pulmonary veins, two from each lung. They carry oxygenated blood, which is unusual since almost all other veins carry deoxygenated blood.
[6] In onion food is stored in -
A.
aerial stem
B.
root
C.
scale leaves
D.
bud
Ans:
scale leaves
Explanation :
In onions, the bulbs consist of very short stems with closely packed leaves arranged in concentric circles round the stem. These leaves are swollen with stored food. The inner leaves are fleshy while the outer ones are dry. This is called as tunicated bulb since 'the concentric leaf bases form a complete covering or tunic.
[7] In human body, cartilage is found in -
A.
tognue
B.
nose
C.
chin
D.
nail
Ans:
nose
Explanation :
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the inter- vertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle.
[8] Sickle-cell anemia is a disease caused due to the abnormality in -
A.
white blood cells
B.
red blood cells
C.
thrombocytes
D.
blood plasma composition
Ans:
red blood cells
Explanation :
Sickle cell anemia (sickle cell disease) is a disorder of the blood caused by an inherited abnormal hemoglobin (the oxygen-carrying protein within the red blood cells).
[9] Jaundice is caused due to the infection of -
A.
brain
B.
liver
C.
kidney
D.
spleen
Ans:
liver
Explanation :
Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.
[10] Haemophilia is -
A.
an organic disorder
B.
a metabolic disorder
C.
a genetic disorder
D.
a hormonal disorder
Ans:
a genetic disorder
Explanation :
Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. Haemophilia A (clotting factor VIII deficiency) is the most common form of the disorder, present in about 1 in 5,000- 10,000 male births.
[11] The blood vessel supplying blood to the kidney is -
A.
the renal artery
B.
the hepatic artery
C.
the pulmonary artery
D.
the carotid artery
Ans:
the renal artery
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Itai-itai disease was the name given to the mass cadmium poisoning of Toyama Prefecture, Japan, starting around 1912. Cadmium poisoning can also cause softening of the bones and kidney failure. The cadmium was released into rivers by mining companies in the mountains, which were successfully sued for the damage. Itai-itai disease is known as one of the Four Big Pollution Diseases of Japan.
[4] Two richest known sources of edible protein are -
A.
Meat and eggs
B.
Some algae and other micro-organisms
C.
Soyabean and groundnut
D.
Milk and leafy vegetables
Ans:
Meat and eggs
Explanation :
Meat, fish and eggs are the richest sources of protein. An ounce of meat or fish has approximately 7 grams of protein. A large egg contains 6 grams protein.
[5] The blood vessel carrying blood from the lungs to the heart is -
A.
Hepatic artery
B.
Pulmonary artery
C.
Pulmonary vein
D.
Renal artery
Ans:
Pulmonary vein
Explanation :
The pulmonary veins are large blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart. In humans there are four pulmonary veins, two from each lung. They carry oxygenated blood, which is unusual since almost all other veins carry deoxygenated blood.
[6] In onion food is stored in -
A.
aerial stem
B.
root
C.
scale leaves
D.
bud
Ans:
scale leaves
Explanation :
In onions, the bulbs consist of very short stems with closely packed leaves arranged in concentric circles round the stem. These leaves are swollen with stored food. The inner leaves are fleshy while the outer ones are dry. This is called as tunicated bulb since 'the concentric leaf bases form a complete covering or tunic.
[7] In human body, cartilage is found in -
A.
tognue
B.
nose
C.
chin
D.
nail
Ans:
nose
Explanation :
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the inter- vertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle.
[8] Sickle-cell anemia is a disease caused due to the abnormality in -
A.
white blood cells
B.
red blood cells
C.
thrombocytes
D.
blood plasma composition
Ans:
red blood cells
Explanation :
Sickle cell anemia (sickle cell disease) is a disorder of the blood caused by an inherited abnormal hemoglobin (the oxygen-carrying protein within the red blood cells).
[9] Jaundice is caused due to the infection of -
A.
brain
B.
liver
C.
kidney
D.
spleen
Ans:
liver
Explanation :
Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.
[10] Haemophilia is -
A.
an organic disorder
B.
a metabolic disorder
C.
a genetic disorder
D.
a hormonal disorder
Ans:
a genetic disorder
Explanation :
Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. Haemophilia A (clotting factor VIII deficiency) is the most common form of the disorder, present in about 1 in 5,000- 10,000 male births.
[11] The blood vessel supplying blood to the kidney is -
A.
the renal artery
B.
the hepatic artery
C.
the pulmonary artery
D.
the carotid artery
Ans:
the renal artery
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
The pulmonary veins are large blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart. In humans there are four pulmonary veins, two from each lung. They carry oxygenated blood, which is unusual since almost all other veins carry deoxygenated blood.
[6] In onion food is stored in -
A.
aerial stem
B.
root
C.
scale leaves
D.
bud
Ans:
scale leaves
Explanation :
In onions, the bulbs consist of very short stems with closely packed leaves arranged in concentric circles round the stem. These leaves are swollen with stored food. The inner leaves are fleshy while the outer ones are dry. This is called as tunicated bulb since 'the concentric leaf bases form a complete covering or tunic.
[7] In human body, cartilage is found in -
A.
tognue
B.
nose
C.
chin
D.
nail
Ans:
nose
Explanation :
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the inter- vertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle.
[8] Sickle-cell anemia is a disease caused due to the abnormality in -
A.
white blood cells
B.
red blood cells
C.
thrombocytes
D.
blood plasma composition
Ans:
red blood cells
Explanation :
Sickle cell anemia (sickle cell disease) is a disorder of the blood caused by an inherited abnormal hemoglobin (the oxygen-carrying protein within the red blood cells).
[9] Jaundice is caused due to the infection of -
A.
brain
B.
liver
C.
kidney
D.
spleen
Ans:
liver
Explanation :
Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.
[10] Haemophilia is -
A.
an organic disorder
B.
a metabolic disorder
C.
a genetic disorder
D.
a hormonal disorder
Ans:
a genetic disorder
Explanation :
Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. Haemophilia A (clotting factor VIII deficiency) is the most common form of the disorder, present in about 1 in 5,000- 10,000 male births.
[11] The blood vessel supplying blood to the kidney is -
A.
the renal artery
B.
the hepatic artery
C.
the pulmonary artery
D.
the carotid artery
Ans:
the renal artery
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the inter- vertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle.
[8] Sickle-cell anemia is a disease caused due to the abnormality in -
A.
white blood cells
B.
red blood cells
C.
thrombocytes
D.
blood plasma composition
Ans:
red blood cells
Explanation :
Sickle cell anemia (sickle cell disease) is a disorder of the blood caused by an inherited abnormal hemoglobin (the oxygen-carrying protein within the red blood cells).
[9] Jaundice is caused due to the infection of -
A.
brain
B.
liver
C.
kidney
D.
spleen
Ans:
liver
Explanation :
Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.
[10] Haemophilia is -
A.
an organic disorder
B.
a metabolic disorder
C.
a genetic disorder
D.
a hormonal disorder
Ans:
a genetic disorder
Explanation :
Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. Haemophilia A (clotting factor VIII deficiency) is the most common form of the disorder, present in about 1 in 5,000- 10,000 male births.
[11] The blood vessel supplying blood to the kidney is -
A.
the renal artery
B.
the hepatic artery
C.
the pulmonary artery
D.
the carotid artery
Ans:
the renal artery
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Jaundice is a yellow discoloration of the skin, mucous membranes, and the whites of the eyes caused by increased amounts of bilirubin in the blood. Normally, the liver metabolizes and excretes the bilirubin in the form of bile. However, if there is a disruption in this normal metabolism and/or production of bilirubin, jaundice may result.
[10] Haemophilia is -
A.
an organic disorder
B.
a metabolic disorder
C.
a genetic disorder
D.
a hormonal disorder
Ans:
a genetic disorder
Explanation :
Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. Haemophilia A (clotting factor VIII deficiency) is the most common form of the disorder, present in about 1 in 5,000- 10,000 male births.
[11] The blood vessel supplying blood to the kidney is -
A.
the renal artery
B.
the hepatic artery
C.
the pulmonary artery
D.
the carotid artery
Ans:
the renal artery
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the diaphragm, so as to form nearly a right angle with the aorta.
[12] Which of the following provides energy for photosynthesis?
A.
Water
B.
Sunlight
C.
Chlorophyll
D.
Carbon dioxide
Ans:
Sunlight
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. The general equation for photosynthesis is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
[13] Food for the developing fetus is supplied by the -
A.
Uterus
B.
Placenta
C.
Ovary
D.
Allantosis
Ans:
Placenta
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. It allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood supply. Nutrient transfer to the fetus occurs via both active and passive transport.
[14] The saliva helps in the digestion of -
A.
Proteins
B.
Starch
C.
Fibres
D.
Fats
Ans:
Starch
Explanation :
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. Saliva does not digest the proteins. fats and fibres.
[15] Which vitamin deficiency causes the disease, Pernicious anaemia?
A.
Vitamin B5
B.
Vitamin B12
C.
Vitamin B6
D.
Vitamin C
Ans:
Vitamin B12
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Pernicious anemia is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum.
[16] 'Pigeon milk' is produced by -
A.
Crop
B.
Birds
C.
Mammals
D.
All of the above
Ans:
Birds
Explanation :
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins. Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
[17] Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?
A.
Mitochondria
B.
Golgi bodies
C.
Lysosomes
D.
Glyoxysomes
Ans:
Mitochondria
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Mitochondria are semi-autonomous organelles that likely began as freestanding prokaryotes that invaded eukaryotic cells more than a billion years ago. A symbiotic relationship eventually developed between these prokaryotic cells and their eukaryotic hosts. The former prokaryotes lost the capacity for independent existence but became indispensible to the eukaryotic cells.
[18] Nitrogenous food is -
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Salts
Ans:
Protein
Explanation :
All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based on nitrogen balance, which include total nitrogen in food and excreta.
[19] The pigment which gives colour to the human skin is -
A.
Melanin
B.
Rhodopsin
C.
Iodopsin
D.
Anthocyanin
Ans:
Melanin
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
[20] Which of the following diseases is spread through contaminated food?
A.
Malaria
B.
Tetanus
C.
Typhoid
D.
Mumps
Ans:
Typhoid
Explanation :
Typhoid fever is a disease that is caused by the bacteria Salmonella Typhi. Most people get typhoid fever by eating or drinking food or water that has been contaminated by people with the disease, including by those who do not have any symptoms. Person-to-person spread can also occur.
[21] Prawns belong to which family?
A.
Crustaceans
B.
Fish
C.
Amphibians
D.
Reptiles
Ans:
Crustaceans
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs. Prawns are also known as shrimps.
[22] Number of the pairs of the spinal nerves are:
A.
30
B.
31
C.
33
D.
32
Ans:
31
Explanation :
Cranial and spinal nerves are part of peripheral nervous system. The 12 pairs of cranial nerves are part of peripheral nervous system and are mostly concentred with head, neck and facial region of the body (vagus nerve X being the part of autonomous division serves as an exception). Spinal nerves are attached to spinal cord. There are total 31 spinal nerves which are grouped as cervical (C1 to C8), thoracic (T1 to T12), lumber (L1 to L5), sacral (S1 to S5), and coccygeal nerves (C1).
[23] How many times does the heartbeat approximately in a minute in humans?
A.
25 times
B.
30 times
C.
72 times
D.
96 times
Ans:
72 times
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).
[24] Protein is considered as a -
A.
Body builder
B.
Energy producer
C.
Regulator
D.
Bulk increaser
Ans:
Body builder
Explanation :
Protein is required by the body for the growth, maintenance and repair of all cells. Protein is a major component of all muscles, tissues and organs and is vital for practically every process that occurs within the body such as metabolism, digestion and the transportation of nutrients and oxygen in the blood. When the proteins that we consume in our food are broken down through digestion into individual amino acids, these amino acids are then absorbed and reform in order to create new proteins that are then used by the body.
[25] Polio disease is caused by -
A.
Bacteria
B.
Fungi
C.
Virus
D.
Worm
Ans:
Virus
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.
Explanation :
Polio, or poliomyelitis, is a crippling and potentially deadly infectious disease. Polio is caused by the poliovirus, a highly contagious virus specific to humans.