Question

Each B or T cell has ________.

A) one antigen receptor
B) two antigen receptors that recognize the same epitope
C) two antigen receptors that recognize different epitopes
D) many antigen receptors that recognize the same epitope
E) many antigen receptors that recognize many epitopes

Answer 1

Each B or T cell has one antigen receptor that is specific to a particular epitope, providing a unique specificity in the immune response.

Step-by-step explanation:

Each B or T cell has one antigen receptor. This receptor can bind to specific antigenic determinants, often referred to as epitopes. Both B and T cells exhibit distinct specificity due to the unique antigen receptor they express, which allows them to bind to specific epitopes presented by antigen-presenting cells (APCs). B cells have B-cell receptors (BCRs) which are membrane-bound forms of immunoglobulin, displaying diversity within the immune system by undergoing genetic rearrangement. In turn, this diversity allows an individual to respond to a wide array of pathogens. Despite the immense diversity of B and T cells in the body, each cell is committed to recognizing a specific epitope.