[1] The carbon dioxide content in the air that we exhale is about -
A.
0.04
B.
0.08
C.
0.12
D.
0.16
Ans:
0.04
Explanation :
Carbon dioxide exists in Earth’s atmosphere in this state, as a trace gas at a concentration of 0.039 per cent by volume. The air we breathe in contains about 0.04% carbon dioxide. The air we breathe out contains about 4% carbon dioxide. In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.
[2] Blood pressure is controlled by -
A.
Adrenal gland
B.
Thyroid gland
C.
Thymus
D.
Corpus luteum
Ans:
Adrenal gland
Explanation :
Adrenaline directly affects, regulates and determines the body's ability to maintain a healthy blood pressure. When the adrenal gland becomes damaged or contains tumors, an excess of adrenaline greatly increases blood pressure levels, causing severe headaches, weight loss and other serious problems.
[3] Which of the following is called the powerhouse of the cell?
A.
Nucleus
B.
Lysosome
C.
Chromosome
D.
Mitochondrion
Ans:
Mitochondrion
Explanation :
Mitochondria are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine tri-phosphate (ATP), used as a source of chemical energy. In addition to supplying cellular energy, mitochondria are involved in other tasks such as signaling, cellular differentiation, cell death, as well as the control of the cell cycle and cell growth.
[4] Acquired Immuno Deficiency Syndrome (AIDS) is caused by -
A.
protozoa
B.
virus
C.
fungus
D.
bacteria
Ans:
virus
Explanation :
Human immunodeficiency virus infection/acquired immunodeficiency syndrome (HIV/AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV).
[5] The function of Trypsin is to -
A.
break down fats
B.
synthesize proteins
C.
break down proteins
D.
break down carbohydrates
Ans:
break down proteins
Explanation :
Trypsin is a serine protease found in the, digestive system of many vertebrates, where it hydrolyses proteins. Trypsin is produced in the pancreas. Trypsin cleaves peptide chains mainly at the carboxyl side of the amino acids lysine or arginine, except when either is followed by praline. It is used for numerous biotechnological processes.
[6] Mesothelioma is a type of cancer. The most common area affected in it is the lining of the -
A.
heart
B.
brain
C.
stomach
D.
lungs
Ans:
lungs
Explanation :
Mesothelioma is a type of cancer that develops from the thin layer of tissue that covers many of the internal organs (known as the mesothelium).
[7] How do most insects respire?
A.
Through skin
B.
Through gills
C.
By tracheal system
D.
By lungs
Ans:
By tracheal system
Explanation :
Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.
[8] Which of the following is the best source of Iodine?
A.
Algae
B.
Beans
C.
Radish
D.
Wheat
Ans:
Beans
Explanation :
Iodine exists in soil, but the content may vary because soil erosion can leach away this and other minerals. Beans and seeds highest in iodine content include lima beans, soybeans, cooked navy beans and sesame seeds. Vegetables highest in iodine include spinach, Swiss chard, turnip greens, summer squash and white potatoes with the peel. The herb highest in iodine is garlic.
[9] Transport of oxygen by blood takes place with the help of -
A.
Erythrocytes
B.
Thrombocytes
C.
Lymphocytes
D.
Leuecocytes
Ans:
Erythrocytes
Explanation :
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. The cytoplasm of these cells is rich in haemoglobin., an iron-containing bio-molecule that can bind oxygen and is responsible for the blood's red color.
[10] Butter is -
A.
fat dispersed in milk
B.
water dispersed in fat
C.
water dispersed in oil
D.
fat dispersed in water
Ans:
water dispersed in fat
Explanation :
Butter is an emulsion of water in milk fat. The water constitutes the dispersed phase and the milk fat the continuous phase. As well as fat and water, butter products and dairy spread products contain a range of other milk compounds such as protein, lactose, minerals, vitamins, fat-accompanying substances and, in soured butter, microbially formed metabolites such as lactic acid and aromatic substances.
[11] The part of the flower that can carry out photosynthesis is -
A.
Androecium
B.
Gynoecium
C.
Calyx
D.
Corolla
Ans:
Calyx
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Carbon dioxide exists in Earth’s atmosphere in this state, as a trace gas at a concentration of 0.039 per cent by volume. The air we breathe in contains about 0.04% carbon dioxide. The air we breathe out contains about 4% carbon dioxide. In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.
[2] Blood pressure is controlled by -
A.
Adrenal gland
B.
Thyroid gland
C.
Thymus
D.
Corpus luteum
Ans:
Adrenal gland
Explanation :
Adrenaline directly affects, regulates and determines the body's ability to maintain a healthy blood pressure. When the adrenal gland becomes damaged or contains tumors, an excess of adrenaline greatly increases blood pressure levels, causing severe headaches, weight loss and other serious problems.
[3] Which of the following is called the powerhouse of the cell?
A.
Nucleus
B.
Lysosome
C.
Chromosome
D.
Mitochondrion
Ans:
Mitochondrion
Explanation :
Mitochondria are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine tri-phosphate (ATP), used as a source of chemical energy. In addition to supplying cellular energy, mitochondria are involved in other tasks such as signaling, cellular differentiation, cell death, as well as the control of the cell cycle and cell growth.
[4] Acquired Immuno Deficiency Syndrome (AIDS) is caused by -
A.
protozoa
B.
virus
C.
fungus
D.
bacteria
Ans:
virus
Explanation :
Human immunodeficiency virus infection/acquired immunodeficiency syndrome (HIV/AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV).
[5] The function of Trypsin is to -
A.
break down fats
B.
synthesize proteins
C.
break down proteins
D.
break down carbohydrates
Ans:
break down proteins
Explanation :
Trypsin is a serine protease found in the, digestive system of many vertebrates, where it hydrolyses proteins. Trypsin is produced in the pancreas. Trypsin cleaves peptide chains mainly at the carboxyl side of the amino acids lysine or arginine, except when either is followed by praline. It is used for numerous biotechnological processes.
[6] Mesothelioma is a type of cancer. The most common area affected in it is the lining of the -
A.
heart
B.
brain
C.
stomach
D.
lungs
Ans:
lungs
Explanation :
Mesothelioma is a type of cancer that develops from the thin layer of tissue that covers many of the internal organs (known as the mesothelium).
[7] How do most insects respire?
A.
Through skin
B.
Through gills
C.
By tracheal system
D.
By lungs
Ans:
By tracheal system
Explanation :
Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.
[8] Which of the following is the best source of Iodine?
A.
Algae
B.
Beans
C.
Radish
D.
Wheat
Ans:
Beans
Explanation :
Iodine exists in soil, but the content may vary because soil erosion can leach away this and other minerals. Beans and seeds highest in iodine content include lima beans, soybeans, cooked navy beans and sesame seeds. Vegetables highest in iodine include spinach, Swiss chard, turnip greens, summer squash and white potatoes with the peel. The herb highest in iodine is garlic.
[9] Transport of oxygen by blood takes place with the help of -
A.
Erythrocytes
B.
Thrombocytes
C.
Lymphocytes
D.
Leuecocytes
Ans:
Erythrocytes
Explanation :
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. The cytoplasm of these cells is rich in haemoglobin., an iron-containing bio-molecule that can bind oxygen and is responsible for the blood's red color.
[10] Butter is -
A.
fat dispersed in milk
B.
water dispersed in fat
C.
water dispersed in oil
D.
fat dispersed in water
Ans:
water dispersed in fat
Explanation :
Butter is an emulsion of water in milk fat. The water constitutes the dispersed phase and the milk fat the continuous phase. As well as fat and water, butter products and dairy spread products contain a range of other milk compounds such as protein, lactose, minerals, vitamins, fat-accompanying substances and, in soured butter, microbially formed metabolites such as lactic acid and aromatic substances.
[11] The part of the flower that can carry out photosynthesis is -
A.
Androecium
B.
Gynoecium
C.
Calyx
D.
Corolla
Ans:
Calyx
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Mitochondria are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine tri-phosphate (ATP), used as a source of chemical energy. In addition to supplying cellular energy, mitochondria are involved in other tasks such as signaling, cellular differentiation, cell death, as well as the control of the cell cycle and cell growth.
[4] Acquired Immuno Deficiency Syndrome (AIDS) is caused by -
A.
protozoa
B.
virus
C.
fungus
D.
bacteria
Ans:
virus
Explanation :
Human immunodeficiency virus infection/acquired immunodeficiency syndrome (HIV/AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV).
[5] The function of Trypsin is to -
A.
break down fats
B.
synthesize proteins
C.
break down proteins
D.
break down carbohydrates
Ans:
break down proteins
Explanation :
Trypsin is a serine protease found in the, digestive system of many vertebrates, where it hydrolyses proteins. Trypsin is produced in the pancreas. Trypsin cleaves peptide chains mainly at the carboxyl side of the amino acids lysine or arginine, except when either is followed by praline. It is used for numerous biotechnological processes.
[6] Mesothelioma is a type of cancer. The most common area affected in it is the lining of the -
A.
heart
B.
brain
C.
stomach
D.
lungs
Ans:
lungs
Explanation :
Mesothelioma is a type of cancer that develops from the thin layer of tissue that covers many of the internal organs (known as the mesothelium).
[7] How do most insects respire?
A.
Through skin
B.
Through gills
C.
By tracheal system
D.
By lungs
Ans:
By tracheal system
Explanation :
Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.
[8] Which of the following is the best source of Iodine?
A.
Algae
B.
Beans
C.
Radish
D.
Wheat
Ans:
Beans
Explanation :
Iodine exists in soil, but the content may vary because soil erosion can leach away this and other minerals. Beans and seeds highest in iodine content include lima beans, soybeans, cooked navy beans and sesame seeds. Vegetables highest in iodine include spinach, Swiss chard, turnip greens, summer squash and white potatoes with the peel. The herb highest in iodine is garlic.
[9] Transport of oxygen by blood takes place with the help of -
A.
Erythrocytes
B.
Thrombocytes
C.
Lymphocytes
D.
Leuecocytes
Ans:
Erythrocytes
Explanation :
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. The cytoplasm of these cells is rich in haemoglobin., an iron-containing bio-molecule that can bind oxygen and is responsible for the blood's red color.
[10] Butter is -
A.
fat dispersed in milk
B.
water dispersed in fat
C.
water dispersed in oil
D.
fat dispersed in water
Ans:
water dispersed in fat
Explanation :
Butter is an emulsion of water in milk fat. The water constitutes the dispersed phase and the milk fat the continuous phase. As well as fat and water, butter products and dairy spread products contain a range of other milk compounds such as protein, lactose, minerals, vitamins, fat-accompanying substances and, in soured butter, microbially formed metabolites such as lactic acid and aromatic substances.
[11] The part of the flower that can carry out photosynthesis is -
A.
Androecium
B.
Gynoecium
C.
Calyx
D.
Corolla
Ans:
Calyx
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Trypsin is a serine protease found in the, digestive system of many vertebrates, where it hydrolyses proteins. Trypsin is produced in the pancreas. Trypsin cleaves peptide chains mainly at the carboxyl side of the amino acids lysine or arginine, except when either is followed by praline. It is used for numerous biotechnological processes.
[6] Mesothelioma is a type of cancer. The most common area affected in it is the lining of the -
A.
heart
B.
brain
C.
stomach
D.
lungs
Ans:
lungs
Explanation :
Mesothelioma is a type of cancer that develops from the thin layer of tissue that covers many of the internal organs (known as the mesothelium).
[7] How do most insects respire?
A.
Through skin
B.
Through gills
C.
By tracheal system
D.
By lungs
Ans:
By tracheal system
Explanation :
Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.
[8] Which of the following is the best source of Iodine?
A.
Algae
B.
Beans
C.
Radish
D.
Wheat
Ans:
Beans
Explanation :
Iodine exists in soil, but the content may vary because soil erosion can leach away this and other minerals. Beans and seeds highest in iodine content include lima beans, soybeans, cooked navy beans and sesame seeds. Vegetables highest in iodine include spinach, Swiss chard, turnip greens, summer squash and white potatoes with the peel. The herb highest in iodine is garlic.
[9] Transport of oxygen by blood takes place with the help of -
A.
Erythrocytes
B.
Thrombocytes
C.
Lymphocytes
D.
Leuecocytes
Ans:
Erythrocytes
Explanation :
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. The cytoplasm of these cells is rich in haemoglobin., an iron-containing bio-molecule that can bind oxygen and is responsible for the blood's red color.
[10] Butter is -
A.
fat dispersed in milk
B.
water dispersed in fat
C.
water dispersed in oil
D.
fat dispersed in water
Ans:
water dispersed in fat
Explanation :
Butter is an emulsion of water in milk fat. The water constitutes the dispersed phase and the milk fat the continuous phase. As well as fat and water, butter products and dairy spread products contain a range of other milk compounds such as protein, lactose, minerals, vitamins, fat-accompanying substances and, in soured butter, microbially formed metabolites such as lactic acid and aromatic substances.
[11] The part of the flower that can carry out photosynthesis is -
A.
Androecium
B.
Gynoecium
C.
Calyx
D.
Corolla
Ans:
Calyx
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.
[8] Which of the following is the best source of Iodine?
A.
Algae
B.
Beans
C.
Radish
D.
Wheat
Ans:
Beans
Explanation :
Iodine exists in soil, but the content may vary because soil erosion can leach away this and other minerals. Beans and seeds highest in iodine content include lima beans, soybeans, cooked navy beans and sesame seeds. Vegetables highest in iodine include spinach, Swiss chard, turnip greens, summer squash and white potatoes with the peel. The herb highest in iodine is garlic.
[9] Transport of oxygen by blood takes place with the help of -
A.
Erythrocytes
B.
Thrombocytes
C.
Lymphocytes
D.
Leuecocytes
Ans:
Erythrocytes
Explanation :
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. The cytoplasm of these cells is rich in haemoglobin., an iron-containing bio-molecule that can bind oxygen and is responsible for the blood's red color.
[10] Butter is -
A.
fat dispersed in milk
B.
water dispersed in fat
C.
water dispersed in oil
D.
fat dispersed in water
Ans:
water dispersed in fat
Explanation :
Butter is an emulsion of water in milk fat. The water constitutes the dispersed phase and the milk fat the continuous phase. As well as fat and water, butter products and dairy spread products contain a range of other milk compounds such as protein, lactose, minerals, vitamins, fat-accompanying substances and, in soured butter, microbially formed metabolites such as lactic acid and aromatic substances.
[11] The part of the flower that can carry out photosynthesis is -
A.
Androecium
B.
Gynoecium
C.
Calyx
D.
Corolla
Ans:
Calyx
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. The cytoplasm of these cells is rich in haemoglobin., an iron-containing bio-molecule that can bind oxygen and is responsible for the blood's red color.
[10] Butter is -
A.
fat dispersed in milk
B.
water dispersed in fat
C.
water dispersed in oil
D.
fat dispersed in water
Ans:
water dispersed in fat
Explanation :
Butter is an emulsion of water in milk fat. The water constitutes the dispersed phase and the milk fat the continuous phase. As well as fat and water, butter products and dairy spread products contain a range of other milk compounds such as protein, lactose, minerals, vitamins, fat-accompanying substances and, in soured butter, microbially formed metabolites such as lactic acid and aromatic substances.
[11] The part of the flower that can carry out photosynthesis is -
A.
Androecium
B.
Gynoecium
C.
Calyx
D.
Corolla
Ans:
Calyx
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
A flower has calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. Photosynthetic activity is found in the calyx, green shoulder, pericarp, and locular parenchyma. It suggests that all of these tissues have significant roles in CO2 scavenging and the provision of carbon assimilates.
[12] ‘Pacemaker’ is associated with -
A.
Kidney
B.
Brain
C.
Heart
D.
Lung
Ans:
Heart
Explanation :
A pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to initiate and regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate.
[13] Insufficient dietary iodine can cause -
A.
Cretinism
B.
Giant build
C.
Enlarged thyroid
D.
Small thyroid
Ans:
Enlarged thyroid
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
A severe iodine deficiency can cause hypothyroidism, and even developmental brain disorders and severe goiter. If there is not enough iodine in the diet, the thyroid will be unable to produce enough hormone. Thus, insufficient dietary iodine can cause the thyroid to grow unnaturally, due to the pituitary's continued high production of TSH in its attempt to raise thyroid hormone levels.
[14] What determines the sex of a child?
A.
Chromosomes of the father
B.
Chromosomes of the mother
C.
Rh factor of the parents
D.
Blood group of the father
Ans:
Chromosomes of the father
Explanation :
In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the male- provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively.
[15] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Tuberculosis is an infectious disease usually caused by Mycobacterium tuberculosis bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. The symptoms of active TB is a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.
[16] In a freezer ice cubes will be formed more quickly in trays made of -
A.
rubber
B.
plastic
C.
aluminium
D.
wood
Ans:
aluminium
Explanation :
Aluminium being a good conductor of heat conducts away the heat from the substance quite easily and causes quick freezing.
[17] Carrot is a rich source of vitamin -
A.
A
B.
C
C.
D
D.
E
Ans:
A
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Carrot is an extremely rich source of vitamin A. The name carotene, which is a form of pro-vitamin, has been derived from carrot. The carotene is converted into vitamin A by the liver and it is also stored in our body.
[18] Which one of the following is used as a food preservative?
A.
Sodium benzoate
B.
Sodium thiosulphate
C.
Sodium hydroxide
D.
Sodium bicarbonate
Ans:
Sodium benzoate
Explanation :
Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
[19] Which of the following organelle of the cell contain their own genetic material?
A.
Mitochondria
B.
Ribosomes
C.
Golgi complex
D.
None of the above
Ans:
Mitochondria
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
[20] The disease Beri Beri is caused due to the deficiency of which of the following?
A.
Vitamin B2
B.
Vitamin B1
C.
Vitamin B12
D.
Vitamin E
Ans:
Vitamin B1
Explanation :
Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi.
[21] Which is the largest blood vessel, in human body?
A.
Aorta
B.
Anatomises
C.
Tunica Intima
D.
Atrium
Ans:
Aorta
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
Aorta is the largest blood vessel in human body. It is the largest of the systemic circulation arteries, Blood enters the aorta from the left ventricle of the heart by way of a one-way valve to prevent backflow. From the aorta, several arterial branches carry oxygenated blood to all tissues in the body.
[22] The blotting technique used to identify the isolated protein is -
A.
Northern blotting
B.
Western blotting
C.
Southern blotting
D.
Cloning
Ans:
Western blotting
Explanation :
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. In most basic terms, it is used to detect the presence of a specific protein in a complex mixture extracted from cells.
[23] Morphology of Chromosomes can be best studied at -
A.
Interphase
B.
Prophase
C.
Metaphase
D.
Zygotene
Ans:
Metaphase
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state and become thicker and well arranged. The following structures are observed in a typical chromosome: Chromatid, Chrornonemata, Primary constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.
[24] Which of the following is a fish?
A.
Jelly fish
B.
Lobster
C.
Salmon
D.
Whale
Ans:
Salmon
Explanation :
Salmon is the common name for several species of rayfinned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean.
[25] The vitamin which cannot be had from any vegetables is -
A.
Vitamin B
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin D
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.
Explanation :
In humans, vitamin D is unique because the body can synthesize it (from cholesterol) when sun exposure is adequate (hence its nickname, the "sunshine vitamin"). Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources.