Multiple Choice
Which class of MHC proteins presents exogenous antigens?
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21. The Immune System
Major Histocompatibility Complex Molecules
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which MHC complex is found on all nucleated cells?
A
MHC Class III
B
MHC Class I
C
MHC Class IV
D
MHC Class II
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Understand the role of Major Histocompatibility Complex (MHC) molecules in the immune system. MHC molecules are essential for the immune system to recognize foreign molecules.
Learn about the different classes of MHC molecules: MHC Class I, MHC Class II, and MHC Class III. Each class has distinct functions and locations within the body.
MHC Class I molecules are found on all nucleated cells. They present peptide fragments from proteins within the cell to cytotoxic T cells, which are part of the immune response.
MHC Class II molecules are primarily found on antigen-presenting cells such as macrophages, dendritic cells, and B cells. They present extracellular protein fragments to helper T cells.
MHC Class III molecules are involved in the complement system and do not present antigens. They are not found on all nucleated cells like MHC Class I.
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