Explore topic-wise MCQs in Biology.

This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

5101.

Deficiency of which of the following causes tooth decay?

A. fluorine
B. copper
C. zinc
D. iron
Answer» B. copper
5102.

What is the highest amount in spinach leaves?

A. Vitamins
B. Carbohydrate
C. Iron
D. fat
Answer» D. fat
5103.

Which of the following happens in teeth?

A. calcium
B. minerals
C. Carbohydrate
D. glucose
Answer» B. minerals
5104.

Which of the following elements is associated with the deformity of teeth?

A. Iodine
B. bromine
C. fluorine
D. chlorine
Answer» D. chlorine
5105.

In which iron element is found in abundance?

A. Milk
B. eggs
C. Orange
D. green vegetables
Answer» E.
5106.

What is the chemical name of vitamin?

A. tocopherol
B. retinol
C. Riboflavin
D. none of these
Answer» B. retinol
5107.

Which vitamin makes blood clot in human body?

A. Vitamin A1
B. Vitamin E
C. Vitamin K.
D. Vitamin D
Answer» D. Vitamin D
5108.

Which of the following is the best source of iodine?

A. Radish
B. beans
C. algae
D. all these
Answer» D. all these
5109.

What is the average percentage of oxygen in the human body?

A. 35 %
B. 50 %
C. 43 %
D. 55 %
Answer» C. 43 %
5110.

From where does man get iron?

A. Milk
B. fish
C. Spinach
D. cheese
Answer» D. cheese
5111.

Which is a vitamin that cannot be obtained from any vegetable?

A. Vitamin A1
B. Vitamin B1
C. Vitamin D
D. Vitamin E
Answer» D. Vitamin E
5112.

What is the chemical name of Vitamin C?

A. nitric acid
B. oxalic acid
C. citric acid
D. ascorbic acid
Answer» E.
5113.

What is Thiamine?

A. Vitamin A1
B. Vitamin B1
C. Vitamin B2
D. Vitamin C
Answer» C. Vitamin B2
5114.

Which of the following is found in the production of Vitamin D?

A. folic acid
B. calciferol
C. retinol
D. none of these
Answer» C. retinol
5115.

Which of the following is found in fish liver oil?

A. Vitamin A
B. Vitamin E
C. Vitamin C
D. Vitamin D
Answer» E.
5116.

Which vitamin is produced in the human body in the morning sunlight?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer» E.
5117.

Which of the following does not receive energy?

A. Vitamins
B. protein
C. Carbohydrate
D. fat
Answer» B. protein
5118.

Where does the human body store vitamin A?

A. liver
B. spleen
C. abdomen
D. stomach
Answer» B. spleen
5119.

Where do vegetarians get the most protein?

A. from parties
B. with vegetables
C. from milk
D. all these
Answer» B. with vegetables
5120.

Which of the following is the largest source of protein?

A. Peas
B. Soybean
C. urad
D. gram
Answer» C. urad
5121.

Deficiency of which vitamin is the main cause of night blindness?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer» B. Vitamin B
5122.

Who coined the term vitamin?

A. Funk
B. Lenak
C. Pasteur
D. Mendel
Answer» B. Lenak
5123.

Where is fat stored in the human body?

A. in the liver
B. in the skin
C. in adipose tissue
D. none of these
Answer» D. none of these
5124.

Carrots are a rich source of which vitamin?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer» B. Vitamin B
5125.

Which of the following is called a protective substance?

A. protein
B. Carbohydrate
C. Vitamins
D. fat
Answer» D. fat
5126.

Which of the following gives an athlete quicker and more energy?

A. protein
B. Carbohydrate
C. glucose
D. Vitamins
Answer» C. glucose
5127.

What is an enzyme basically?

A. lipids
B. acid
C. Carbohydrate
D. protein
Answer» E.
5128.

What make up tissues in the body?

A. protein
B. Carbohydrate
C. fat
D. Vitamins
Answer» B. Carbohydrate
5129.

Carbohydrates are re-stored in the human body?

A. glycogen
B. Sugar
C. starch
D. glucose
Answer» B. Sugar
5130.

What are the main components of honey?

A. protein
B. fat
C. Vitamins
D. Carbohydrate
Answer» E.
5131.

Which of the following sugars provides instant energy?

A. cellulose
B. maltose
C. glucose
D. none of these
Answer» D. none of these
5132.

In which protein is not found?

A. rice
B. lentils
C. Milk
D. Meat
Answer» B. lentils
5133.

What is the percentage of protein in soybean?

A. 50 %
B. 42 %
C. 64 %
D. 75 %
Answer» C. 64 %
5134.

Which of the following provides the most energy?

A. mineral salts
B. Carbohydrate
C. protein
D. Vitamins
Answer» C. protein
5135.

What is the main component of honey?

A. maltose
B. Fructose
C. glucose
D. Vitamins
Answer» C. glucose
5136.

What is the cover of the capsule made of?

A. Of starch
B. of protein
C. of glucose
D. of cellulose
Answer» B. of protein
5137.

Is it an essential ingredient of food?

A. protein
B. Carbohydrate
C. glucose
D. all these
Answer» C. glucose
5138.

What is the suicide sac of a cell called?

A. golgi body
B. mitochondria
C. centriole
D. lysosomes
Answer» E.
5139.

Which of the following substances acts as fuel in the human body?

A. Vitamins
B. water
C. protein
D. Carbohydrate
Answer» E.
5140.

Who discovered the nucleus first?

A. brown
B. robert hook
C. Fleming
D. none of these
Answer» B. robert hook
5141.

What is the physical basis of life?

A. the cell
B. nucleus
C. meal
D. protoplasm
Answer» E.
5142.

Where is mitochondria absent?

A. green algae
B. bacteria
C. fungus
D. Yeast
Answer» C. fungus
5143.

What gives green color to leaves?

A. chloroplast
B. tonoplast
C. chromoplast
D. none of these
Answer» B. tonoplast
5144.

What gives different types of attractive colors to flowers and seeds?

A. Leukoplast
B. tonoplast
C. chromoplast
D. none of these
Answer» D. none of these
5145.

The functional activities of the cell are controlled by?

A. By Kendrika
B. by nucleus
C. by protoplasm
D. none of these
Answer» C. by protoplasm
5146.

Who first used the word protoplasm?

A. rutherford
B. Huxley
C. Purkinje
D. John Dalton
Answer» D. John Dalton
5147.

Where is the Center for Cell and Molecular Biology located?

A. Hyderabad
B. Mumbai
C. Kolkata
D. none of these
Answer» B. Mumbai
5148.

Protoplasm is the physical basis of life, whose statement is it?

A. Huxley
B. lamarck
C. henry
D. none of these
Answer» B. lamarck
5149.

The difference between a plant cell and an animal cell is found due to the presence of?

A. cell wall
B. Cell membrane
C. nucleus
D. none of these
Answer» B. Cell membrane
5150.

Which organelle is often not present in animal cells?

A. golgi body
B. mitochondria
C. reaper
D. Mitochondria and Reaper
Answer» D. Mitochondria and Reaper