Please select the CORRECT statement regarding MHC molecules.
A) Cytotoxic T cells recognize antigens presented on MHC class II molecules.
B) Dendritic cells are the only cells that make MHC class II molecules.
C) All nucleated cells express MHC class II molecules.
D) Helper T cells recognize antigens presented on MHC class II molecules.
E) Endogenous antigens are presented on MHC class II molecules.

Question

Please select the CORRECT statement regarding MHC molecules.
A) Cytotoxic T cells recognize antigens presented on MHC class II molecules.
B) Dendritic cells are the only cells that make MHC class II molecules.
C) All nucleated cells express MHC class II molecules.
D) Helper T cells recognize antigens presented on MHC class II molecules.
E) Endogenous antigens are presented on MHC class II molecules.

Quizplus · Accepted Answer

Helper T cells recognize antigens presented on MHC class II molecules. MHC class II molecules are mainly found on antigen-presenting cells such as dendritic cells, macrophages, and B cells. These molecules present exogenous antigens, which are antigens that come from outside the cell, to T helper cells. Cytotoxic T cells recognize antigens presented on MHC class I molecules, which are expressed on all nucleated cells. Therefore, option A and C are incorrect. Option B is incorrect because MHC class II molecules are expressed by multiple types of cells, not just dendritic cells. Option E is also incorrect because endogenous antigens are presented on MHC class I molecules, not class II molecules.

Please Select the CORRECT Statement Regarding MHC Molecules