When an Antigen is Bound to a Class II MHC

Question

When an antigen is bound to a Class II MHC protein, it can activate a ________ cell.
A) plasma
B) helper T
C) NK
D) suppressor T
E) cytotoxic T

Accepted Answer

Helper T cells recognize antigens presented on Class II MHC proteins and activate other immune cells, such as B cells and cytotoxic T cells, to respond to the antigen. Plasma cells, NK cells, and suppressor T cells are not directly activated by Class II MHC proteins.