Question

Which type of T cell has antigen receptors?

A) cytotoxic T cells only
B) suppressor T cells only
C) helper T cells only
D) both cytotoxic and helper T cells
E) cytotoxic, helper, and suppressor T cells

Answer 1

Cytotoxic, helper, and suppressor T cells all have antigen receptors known as T cell receptors (TCR). Cytotoxic T cells are involved in destroying infected cells, helper T cells assist in immune cell activation, and suppressor T cells regulate the immune response.

Step-by-step explanation:

The type of T cell that has antigen receptors is cytotoxic, helper, and suppressor T cells. All these T cells have specialized receptors known as T cell receptors (TCR) that allow them to recognize and respond to antigens.

Cytotoxic T cells (CD8+) destroy cells that have been infected by viruses or have become cancerous, while helper T cells (CD4+) assist in the activation of other immune cells, including B cells and other T cells.

Suppressor T cells, also known as regulatory T cells, help in downregulating the immune response and maintaining tolerance to self-antigens. Therefore, the correct answer is E) cytotoxic, helper, and suppressor T cells.