Insulin has 51 amino acids in two polypeptide chains which are linked by:

(1) one sulphide bond

(2) one disulphide bond

(3) two disulphide bonds

(4) three disulphide bonds

(1) B

(2) C

(3) D

(4) E

The hormone insulin is a secretion of the organ:

1. ovary

2. testes

3. adrenal cortex

4. pancreas

The process of respiration in absence of oxygen is called:

(1) metabolic

(2) aerobic

(3) anaerobic

(4) glycolysis

One mole of glucose on respiration produces:-

(1)36 mole of ATP

(2)34 mole of ATP

(3)40 mole of ATP

(4)38 mole of ATP

Which of the following is protein hormones?

1. Insulin

2. Oxytocin

3. Both (1) and (2)

4. None of the above

The function of DNA is:

One of the essential α-amino acids is:

Insulin, a protein acts as:

1. an antibody

2. a hormone

3. an enzyme

4. a transport agent

Which one of the following vitamins contains a metal atom?

1. Riboflavin

2. Vitamin B₁₂

3. Vitamin A

4. Vitamin B₆