The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called a/ an
A)epitope.
B)hapten.
C)antigen binding site.
D)variable region.

Question

Quizplus · Accepted Answer

The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called an epitope. A lymphocyte's receptor binds specifically to epitopes, stimulating an immune response. Options B, C, and D are not technically incorrect, but they do not accurately describe the specific molecular fragment on the antigen that the lymphocyte is recognizing.

The Molecular Fragment on an Antigen Molecule That a Lymphocyte