[1] Chocolates can be bad for health because of a high content of -
A.
cobalt
B.
nickel
C.
zinc
D.
lead
Ans:
lead
Explanation :
Chocolate absorbs lead from the environment during production. Recently there has been concern of mild lead poisoning for some types of chocolate.
[2] Tuberculosis infection is by means of -
A.
Mycobacterium avonin
B.
Staphylococcus
C.
Mycobacterium tuberculosis
D.
Streptococcus
Ans:
Mycobacterium tuberculosis
Explanation :
Tuberculosis is a common, and in many cases lethal, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis. Tuberculosis typically attacks the lungs, but can also affect other parts of the body. It is spread through the air. 676.
[3] The abnormal constituent of urine is -
A.
urea
B.
creatinine
C.
albumin
D.
sodium
Ans:
albumin
Explanation :
The tests employed to detect commonly present abnormal constituents are proteins, glucose, ketone bodies, bile pigments, bile salts and blood. The liver synthesizes a type of protein known as albumin. Urine should not contain albumin, as protein molecules are large and so easily get trapped in the kidney's filter and finally they are reabsorbed in the blood stream.
[4] The radioactive Strontium-90 causes :
A.
Brain cancer
B.
Skin cancer
C.
Lung cancer
D.
Bone cancer
Ans:
Skin cancer
Explanation :
Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Used mostly in weapons and nuclear power plants, poisoning usually occurs through accidental ingestion. Studies have also linked strontium-90 to various forms of skin cancer in cases where the radiation was absorbed through the skin.
[5] What causes common cold?
A.
Bacteria
B.
Fungi
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
The common is a viral infectious disease of the upper respiratory tract which affects primarily the nose. Over 200 viruses are implicated in the cause of the common cold; the rhinoviruses are the most common.
[6] The chief raw material used for manufacturing Rayon is :
A.
Nylon
B.
Cellulose
C.
Silicon
D.
Radium and Argon
Ans:
Cellulose
Explanation :
Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber.
[7] Cadmium pollution is associated with -
A.
Minamata disease
B.
Black foot disease
C.
Dyslexia
D.
Itai-itai
Ans:
Itai-itai
Explanation :
Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney failure. The disease is named for the severe pains caused in the joints and spine.
[8] Haemoglobin has highest affinity for -
A.
Oxygen
B.
Carbon dioxide
C.
Carbon monoxide
D.
Nitrogen
Ans:
Oxygen
Explanation :
Haemoglobin has greatest affinity for oxygen with which it binds readily. The oxygen binding properties of hemoglobin exist because of the interaction between oxygen and the iron atom of the heme groups and hemoglobin's quaternary structure.
[9] Which chromosomal combination is responsible for maleness in man?
A.
XO
B.
XXX
C.
XX
D.
XY
Ans:
XY
Explanation :
The chromosomes which determine the sex (maleness or femaleness) of an individual in sexually producing organisms are called sex chromosomes or allosomes or idiosomes. In humans an individual whose cells contain XX chromosomes (homo or isogametic) becomes a female, while one whose cells contains XY chromosomes (heterogametic) becomes a male.
[10] Which cells in our body have the least regenerative power?
A.
Brain cells
B.
Muscle cells
C.
Bone cells
D.
Liver cells
Ans:
Brain cells
Explanation :
Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.
[11] Which one of the following pairs is correctly matched?
A.
Tetanus BCG
B.
Tuberculosis - ATS
C.
Malaria - Chloroquin
D.
Scurvy - Thiamine
Ans:
Malaria - Chloroquin
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Chocolate absorbs lead from the environment during production. Recently there has been concern of mild lead poisoning for some types of chocolate.
[2] Tuberculosis infection is by means of -
A.
Mycobacterium avonin
B.
Staphylococcus
C.
Mycobacterium tuberculosis
D.
Streptococcus
Ans:
Mycobacterium tuberculosis
Explanation :
Tuberculosis is a common, and in many cases lethal, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis. Tuberculosis typically attacks the lungs, but can also affect other parts of the body. It is spread through the air. 676.
[3] The abnormal constituent of urine is -
A.
urea
B.
creatinine
C.
albumin
D.
sodium
Ans:
albumin
Explanation :
The tests employed to detect commonly present abnormal constituents are proteins, glucose, ketone bodies, bile pigments, bile salts and blood. The liver synthesizes a type of protein known as albumin. Urine should not contain albumin, as protein molecules are large and so easily get trapped in the kidney's filter and finally they are reabsorbed in the blood stream.
[4] The radioactive Strontium-90 causes :
A.
Brain cancer
B.
Skin cancer
C.
Lung cancer
D.
Bone cancer
Ans:
Skin cancer
Explanation :
Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Used mostly in weapons and nuclear power plants, poisoning usually occurs through accidental ingestion. Studies have also linked strontium-90 to various forms of skin cancer in cases where the radiation was absorbed through the skin.
[5] What causes common cold?
A.
Bacteria
B.
Fungi
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
The common is a viral infectious disease of the upper respiratory tract which affects primarily the nose. Over 200 viruses are implicated in the cause of the common cold; the rhinoviruses are the most common.
[6] The chief raw material used for manufacturing Rayon is :
A.
Nylon
B.
Cellulose
C.
Silicon
D.
Radium and Argon
Ans:
Cellulose
Explanation :
Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber.
[7] Cadmium pollution is associated with -
A.
Minamata disease
B.
Black foot disease
C.
Dyslexia
D.
Itai-itai
Ans:
Itai-itai
Explanation :
Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney failure. The disease is named for the severe pains caused in the joints and spine.
[8] Haemoglobin has highest affinity for -
A.
Oxygen
B.
Carbon dioxide
C.
Carbon monoxide
D.
Nitrogen
Ans:
Oxygen
Explanation :
Haemoglobin has greatest affinity for oxygen with which it binds readily. The oxygen binding properties of hemoglobin exist because of the interaction between oxygen and the iron atom of the heme groups and hemoglobin's quaternary structure.
[9] Which chromosomal combination is responsible for maleness in man?
A.
XO
B.
XXX
C.
XX
D.
XY
Ans:
XY
Explanation :
The chromosomes which determine the sex (maleness or femaleness) of an individual in sexually producing organisms are called sex chromosomes or allosomes or idiosomes. In humans an individual whose cells contain XX chromosomes (homo or isogametic) becomes a female, while one whose cells contains XY chromosomes (heterogametic) becomes a male.
[10] Which cells in our body have the least regenerative power?
A.
Brain cells
B.
Muscle cells
C.
Bone cells
D.
Liver cells
Ans:
Brain cells
Explanation :
Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.
[11] Which one of the following pairs is correctly matched?
A.
Tetanus BCG
B.
Tuberculosis - ATS
C.
Malaria - Chloroquin
D.
Scurvy - Thiamine
Ans:
Malaria - Chloroquin
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
The tests employed to detect commonly present abnormal constituents are proteins, glucose, ketone bodies, bile pigments, bile salts and blood. The liver synthesizes a type of protein known as albumin. Urine should not contain albumin, as protein molecules are large and so easily get trapped in the kidney's filter and finally they are reabsorbed in the blood stream.
[4] The radioactive Strontium-90 causes :
A.
Brain cancer
B.
Skin cancer
C.
Lung cancer
D.
Bone cancer
Ans:
Skin cancer
Explanation :
Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Used mostly in weapons and nuclear power plants, poisoning usually occurs through accidental ingestion. Studies have also linked strontium-90 to various forms of skin cancer in cases where the radiation was absorbed through the skin.
[5] What causes common cold?
A.
Bacteria
B.
Fungi
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
The common is a viral infectious disease of the upper respiratory tract which affects primarily the nose. Over 200 viruses are implicated in the cause of the common cold; the rhinoviruses are the most common.
[6] The chief raw material used for manufacturing Rayon is :
A.
Nylon
B.
Cellulose
C.
Silicon
D.
Radium and Argon
Ans:
Cellulose
Explanation :
Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber.
[7] Cadmium pollution is associated with -
A.
Minamata disease
B.
Black foot disease
C.
Dyslexia
D.
Itai-itai
Ans:
Itai-itai
Explanation :
Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney failure. The disease is named for the severe pains caused in the joints and spine.
[8] Haemoglobin has highest affinity for -
A.
Oxygen
B.
Carbon dioxide
C.
Carbon monoxide
D.
Nitrogen
Ans:
Oxygen
Explanation :
Haemoglobin has greatest affinity for oxygen with which it binds readily. The oxygen binding properties of hemoglobin exist because of the interaction between oxygen and the iron atom of the heme groups and hemoglobin's quaternary structure.
[9] Which chromosomal combination is responsible for maleness in man?
A.
XO
B.
XXX
C.
XX
D.
XY
Ans:
XY
Explanation :
The chromosomes which determine the sex (maleness or femaleness) of an individual in sexually producing organisms are called sex chromosomes or allosomes or idiosomes. In humans an individual whose cells contain XX chromosomes (homo or isogametic) becomes a female, while one whose cells contains XY chromosomes (heterogametic) becomes a male.
[10] Which cells in our body have the least regenerative power?
A.
Brain cells
B.
Muscle cells
C.
Bone cells
D.
Liver cells
Ans:
Brain cells
Explanation :
Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.
[11] Which one of the following pairs is correctly matched?
A.
Tetanus BCG
B.
Tuberculosis - ATS
C.
Malaria - Chloroquin
D.
Scurvy - Thiamine
Ans:
Malaria - Chloroquin
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
The common is a viral infectious disease of the upper respiratory tract which affects primarily the nose. Over 200 viruses are implicated in the cause of the common cold; the rhinoviruses are the most common.
[6] The chief raw material used for manufacturing Rayon is :
A.
Nylon
B.
Cellulose
C.
Silicon
D.
Radium and Argon
Ans:
Cellulose
Explanation :
Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber.
[7] Cadmium pollution is associated with -
A.
Minamata disease
B.
Black foot disease
C.
Dyslexia
D.
Itai-itai
Ans:
Itai-itai
Explanation :
Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney failure. The disease is named for the severe pains caused in the joints and spine.
[8] Haemoglobin has highest affinity for -
A.
Oxygen
B.
Carbon dioxide
C.
Carbon monoxide
D.
Nitrogen
Ans:
Oxygen
Explanation :
Haemoglobin has greatest affinity for oxygen with which it binds readily. The oxygen binding properties of hemoglobin exist because of the interaction between oxygen and the iron atom of the heme groups and hemoglobin's quaternary structure.
[9] Which chromosomal combination is responsible for maleness in man?
A.
XO
B.
XXX
C.
XX
D.
XY
Ans:
XY
Explanation :
The chromosomes which determine the sex (maleness or femaleness) of an individual in sexually producing organisms are called sex chromosomes or allosomes or idiosomes. In humans an individual whose cells contain XX chromosomes (homo or isogametic) becomes a female, while one whose cells contains XY chromosomes (heterogametic) becomes a male.
[10] Which cells in our body have the least regenerative power?
A.
Brain cells
B.
Muscle cells
C.
Bone cells
D.
Liver cells
Ans:
Brain cells
Explanation :
Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.
[11] Which one of the following pairs is correctly matched?
A.
Tetanus BCG
B.
Tuberculosis - ATS
C.
Malaria - Chloroquin
D.
Scurvy - Thiamine
Ans:
Malaria - Chloroquin
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney failure. The disease is named for the severe pains caused in the joints and spine.
[8] Haemoglobin has highest affinity for -
A.
Oxygen
B.
Carbon dioxide
C.
Carbon monoxide
D.
Nitrogen
Ans:
Oxygen
Explanation :
Haemoglobin has greatest affinity for oxygen with which it binds readily. The oxygen binding properties of hemoglobin exist because of the interaction between oxygen and the iron atom of the heme groups and hemoglobin's quaternary structure.
[9] Which chromosomal combination is responsible for maleness in man?
A.
XO
B.
XXX
C.
XX
D.
XY
Ans:
XY
Explanation :
The chromosomes which determine the sex (maleness or femaleness) of an individual in sexually producing organisms are called sex chromosomes or allosomes or idiosomes. In humans an individual whose cells contain XX chromosomes (homo or isogametic) becomes a female, while one whose cells contains XY chromosomes (heterogametic) becomes a male.
[10] Which cells in our body have the least regenerative power?
A.
Brain cells
B.
Muscle cells
C.
Bone cells
D.
Liver cells
Ans:
Brain cells
Explanation :
Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.
[11] Which one of the following pairs is correctly matched?
A.
Tetanus BCG
B.
Tuberculosis - ATS
C.
Malaria - Chloroquin
D.
Scurvy - Thiamine
Ans:
Malaria - Chloroquin
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
The chromosomes which determine the sex (maleness or femaleness) of an individual in sexually producing organisms are called sex chromosomes or allosomes or idiosomes. In humans an individual whose cells contain XX chromosomes (homo or isogametic) becomes a female, while one whose cells contains XY chromosomes (heterogametic) becomes a male.
[10] Which cells in our body have the least regenerative power?
A.
Brain cells
B.
Muscle cells
C.
Bone cells
D.
Liver cells
Ans:
Brain cells
Explanation :
Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.
[11] Which one of the following pairs is correctly matched?
A.
Tetanus BCG
B.
Tuberculosis - ATS
C.
Malaria - Chloroquin
D.
Scurvy - Thiamine
Ans:
Malaria - Chloroquin
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine, new potential uses of this cheap and widely available drug have been investigated.
[12] The gas used for artificial ripening of green fruit is -
A.
ethane
B.
ethylene
C.
carbon dioxide
D.
acetylene
Ans:
ethylene
Explanation :
Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
[13] Which of the following is a rich source of carbohydrates, proteins and fats?
A.
Bean
B.
Rice
C.
Groundnut
D.
Gram
Ans:
Rice
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients.
[14] The importance of perspiration is to -
A.
Eliminate body odours
B.
Improve the general health
C.
Open the pores in the skin
D.
Regulate body temperature
Ans:
Regulate body temperature
Explanation :
The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.
[15] A disease caused by fungus is -
A.
Round worm
B.
Ringworm
C.
Tapeworm
D.
Filaria
Ans:
Ringworm
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Dermatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic effect on keras.
[16] The organ which stores carbohydrates as glycogen in the human body is -
A.
Intestine
B.
Stomach
C.
Pancreas
D.
Liver
Ans:
Liver
Explanation :
Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue).
[17] Haemoglobin is an important constituent of -
A.
Red blood cells
B.
White blood cells
C.
Platelets
D.
Plasma
Ans:
Red blood cells
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[18] In which of the following animals, is open circulatory system found?
A.
Prawn
B.
Earthworm
C.
Toad
D.
Man
Ans:
Prawn
Explanation :
The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
[19] Blood fails to clot white flowing in the blood vessel because of the presence of -
A.
Hepatin
B.
Prothrombin
C.
liaemoglobin
D.
Iltrudin
Ans:
Hepatin
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Heparin also known as un-fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
[20] Commonest mammal is -
A.
Elephant
B.
Lion
C.
Man (Homo sapiens)
D.
Panther
Ans:
Man (Homo sapiens)
Explanation :
Commonest mammal is human being.
[21] What is the impact of advancing glaciers on the rings of trees?
A.
They become concentric
B.
Their shape is distorted
C.
They become widely spaced
D.
They are immune to this change
Ans:
Their shape is distorted
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Advancing glaciers distort the shape of the rings of trees.
[22] The sweet taste of fruits is due to -
A.
Lactose
B.
Fructose
C.
Maltose
D.
Ribose
Ans:
Fructose
Explanation :
The monosaccharides responsible for sweet taste in fruit is fructose.
[23] Wings of a bird and an insect are -
A.
Homologous organs
B.
Analogous organs
C.
Vestigial organs
D.
Rudimentary organs
Ans:
Analogous organs
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.
[24] Primary source of vitamin-D for human beings is -
A.
citrus fruits
B.
green vegetables
C.
yeast
D.
Sun
Ans:
Sun
Explanation :
Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3).
[25] A mother of blood group O has a group O child. What could be the blood group of father of the child?
A.
Only O
B.
A or B or O
C.
A or B
D.
Only AB
Ans:
A or B or O
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
Explanation :
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).