Multiple Choice
Which of the following is true of receptor editing of the T-cell receptor?
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21. The Immune System
Introduction to T Lymphocytes
Multiple Choice
Which of the following cells recognizes antigens displayed on host cells with MHC II molecules?
A
B cells
B
Cytotoxic T cells
C
Helper T cells
D
Natural killer cells
Verified step by step guidance1
Understand the role of MHC II molecules: MHC II molecules are found on the surface of certain immune cells, such as macrophages, dendritic cells, and B cells. They present processed antigens to T cells.
Identify the type of T cell that interacts with MHC II: Helper T cells (CD4+ T cells) are the ones that recognize antigens presented by MHC II molecules.
Differentiate between T cell types: Cytotoxic T cells (CD8+ T cells) recognize antigens presented by MHC I molecules, not MHC II. Natural killer cells do not rely on MHC molecules for antigen recognition.
Recognize the function of Helper T cells: Once a Helper T cell recognizes an antigen-MHC II complex, it becomes activated and helps stimulate other immune cells, such as B cells and cytotoxic T cells, to mount an immune response.
Conclude that Helper T cells are the correct answer: Based on their role in recognizing antigens presented by MHC II molecules, Helper T cells are the cells that fulfill this function.
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