Question

What is the primary function of MHC Class II molecules?

A) Antigen presentation to CD8+ T cells
B) Antigen presentation to CD4+ T cells
C) Antibody production
D) Cytotoxic cell activation

Answer 1

The primary function of MHC Class II molecules is Antigen presentation to CD4+ T cells. MHC Class II molecules are expressed on the surface of professional antigen-presenting cells such as macrophages, dendritic cells, and B cells. They play a crucial role in the immune response by presenting antigens to CD4+ T cells, which then activate B cells and macrophages to initiate an immune response.

Step-by-step explanation:

The primary function of MHC Class II molecules is Antigen presentation to CD4+ T cells.

MHC Class II molecules are expressed on the surface of professional antigen-presenting cells such as macrophages, dendritic cells, and B cells. These molecules play a crucial role in the immune response by presenting antigens to CD4+ T cells, which then activate B cells and macrophages to initiate an immune response. MHC Class II molecules are involved in the activation of helper T cells, leading to the production of cytokines and the coordination of the immune response.