Question

The part of antibody which binds with the specific antigen to form antigen-antibody complex is ______.

Options

• Paratopes

• Isotopes

• Epitopes

• Octamer

Answer 1

The part of antibody which binds with the specific antigen to form antigen-antibody complex is paratopes.

Explanation:

The paratope is the antigen‑binding site on an antibody formed by the variable regions of the antibody’s light and heavy chains (the Fab region) and binds specifically to an epitope (the matching site) on the antigen. In other words, the epitope is on the antigen, and the paratope is its complementary binding surface on the antibody.