Question

a) What does the image represent?
b) Describe the structure.
c) What is the significance of the structure given in the image? [3]

Answer 1

a) The image represents the structure of an antibody. [1]

b) An antibody molecule has four peptide chains, two smaller ones called light chains and two longer ones called heavy chains. Hence, an antibody is represented as $H_2{L}_2$. It also has antigen binding site. [1]

c) The structure given in the image is of an antibody which fights against all the pathogens that enters our body by binding with the antigen with the help of their antigen binding site. It helps to destroy foreign invaders and remove them from the body, hence provide immunity. [1]