This region of an antibody forms the antigen-binding site that binds a specific antigenic determinant of an antigen.
A) variable portion of heavy and light chains
B) light chain only
C) heavy chain only
D) constant portion of heavy and light chains

Question

Quizplus · Accepted Answer

The antigen-binding site of an antibody is formed by the variable portions of both the heavy and light chains. These regions are highly variable, allowing antibodies to bind specifically to a wide range of antigens.

This Region of an Antibody Forms the Antigen-Binding Site That