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AIPMT MAINS2011Zoology-Human Health and Disease

AIPMT MAINS 2011 Zoology Immunity MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Select the correct statement with respect to diseases and immunisation

(1) Certain protozoans have been used to mass produce hepatitis B vaccine

(2) Injection of snake antivenom against snake bite is an example of active immunisation

(3) If due to some reason B⁻and T⁻lymphocytes are damaged, the body will not produce antibodies against a pathogen

(4) Injection of dead / inactivated pathogens causes passive immunity

A

1

B

2

C

3

D

4

Correct Answer

Option C

Detailed Explanation

Clone of B⁻cells is called as plasma cells which produce antibodies. Helper T⁻cells secrete IL−2L^{-2} (interleukin−2n^{-2}) which stimulate B cells to produce antibodies. Injection of snake antivenom against snake bite is an example of artificially acquired passive immunity.

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