An epitope associates with which part of an antibody?
A)the antibody-binding site
B)the heavy-chain constant regions only
C)variable regions of a heavy chain and light chain combined
D)the light-chain constant regions only
E)the antibody tail

Question

Quizplus · Accepted Answer

An epitope, also known as an antigenic determinant, is the specific part of an antigen that is recognized and bound by an antibody. This epitope associates with the variable regions of both the heavy and light chains of the antibody, which together make up the antigen-binding site. Therefore, choice C, which refers to the variable regions of both chains combined, is the correct answer.

An Epitope Associates with Which Part of an Antibody