Human Health And Disease Question 76

Question: Which of the following statements is/are correct?

(i) Antigen is usually a foreign body which causes the formation of antibody. (ii) Antibody is a protein molecule. (iii) Antigen can be either protein o polysaccharide molecule. (iv) Antibody joins an antigen to destroy the latter.

Options:

A) (i) and (ii)

B) (i) and (iii)

C) All are incorrect

D) All are correct

Show Answer

Answer:

Correct Answer: D

Solution:

Antibody, a protective protein (and sometimes with polysaccharide) produced by the immune system in response to the presence of a foreign substance, called an antigen. The antibodies destroy the antigen which is then engulfed and digested by macrophages.