Which is not a poison for enzymes?

(a) CN^-                       (b) Fe³⁺

(c) Pb²⁺                     (d) ${\mathrm{AsO}}_4^{3-}$

The non-proteinous substances which certain enzymes require for their activity are called:

(a) catalysts                      (b) inhibitors

(c) co-enzymes                  (d) epimers

Antibodies are ?
(a) Carbohydrates
(b) proteins
(c) phospholipids
(d) lipids

Which of the following statements about enzymes is incorrect?

(1) The catalytic action of an enzyme is not specific

(2) An enzymatic reaction is highly sensitive to temperature

(3) The catalytic action of enzymes is due to their capacity to lower the energy of activation of a particular reaction

(4) None of the above

An antigen develops antibodies which protect the body from their harmful effects. The antibodies
are:-

(a) immunoglobulins

(b) phospholipids

(c) albumins

(d) lymphocytes

Deficiency of which Vitamin develops impotencey:

(a) B

(b) C

(c) D

(d) E

Which of the following is protein hormones?

(a) Insulin

(b) Oxytocin

(c) Both (a) and (b)

(d) None of the above

The function of DNA is:

(1) To synthesize RNA

(2) To synthesize the necessary proteins

(3) To carry the hereditary characteristics from generation to generation

(4) all are correct

Which one of the following vitamins contains a metal atom?
(a) Riboflavin
(b) Vitamin B₁₂
(c) Vitamin A
(d) Vitamin B₆

Adenosine is an example of:

(1) Nucleotide

(2) Nucleoside

(3) Purine base

(4) Pyrimidine base