Keratin, a structural protein is present in:

1. hair

2. skin

3. wool

4. All of the above

Blood protein is:

1. Albumin

2. Haemoglobin

3. Both (1) and (2)

4. None of the above

The destruction of the biological nature and activity of proteins by heat or chemical agent is called :-

Enzyme trypsin converts:

1. amino acids into proteins

2. glucose into glycogens

3. starch into sugar

4. proteins into amino acids

Kwashiorkor is caused by the deficiency of?

1. vitamins

2. hormones

3. Carbohydrate

4. essential amino acids

Which is fat soluble vitamin?

(1) Vitamin A

(2) Pyridoxine

(3) Riboflavin

(4) Thiamine

Which vitamin contains N ?

(1) Vitamin A

(2) Vitamin C

(3) Vitamin B

(4) Vitamin D

Vitamin which is believed to cure common cold is ?

(1) A

(2) C

(3) K

(4) E

A vitamin which plays a vital role in the coagulating property of blood is:-

(1) vitamin A

(2) vitamin D

(3) vitamin B

(4) vitamin K

Which is not a poison for enzymes?

(1) CN^-                       

(2) Fe³⁺

(3) Pb²⁺                     

(4) ${\mathrm{AsO}}_4^{3-}$