Question

: which of the following statements about mhc class ii molecules is (are) true? choose one: a. mhc class ii molecules present intracellular antigens on the surfaces of all nucleated cells. b. mhc class ii molecules present extracellular antigens on the surfaces of all nucleated cells. c. mhc class ii molecules present extracellular antigens on the surfaces of professional antigen-presenting cells. d. mhc class ii molecules are expressed on the surfaces of both nucleated

Answer 1

True statements regarding MHC class II: MHC class II molecules present extracellular antigens on the surface of professional antigen-presenting cells.

Two types of MHC molecules characterize body cells, namely MHC class I found in all nucleated cells in almost every cell of the body. MHC class II is limited to a few specialized cell types, including macrophages, B cells, activated T cells, and cells that compose the interior of the thymus.

Major Histocompatibility Complex (MHC) class II molecules are important components for the immune response in the process of eliminating viruses. In this process, helper T cells are activated and produce cytokines that stimulate other immune cells.

The true answer is C.

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