Complete It: T Cells and MHC Molecules Fill in the blanks to complete the following paragraph that describes the properties of MHC molecules and their relationship to cytotoxic and helper T cells. The T cell receptor can only bind to portions of antigen bound to ______ on the surface of cells. Nearly all cells have ______ molecules on their cell surface that display ______ antigens. ______ molecules are found only on antigen-presenting cells and display ______ antigens. TH cells bind to ______ molecules only, whereas Tc cells bind to ______
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T cells can only recognize antigens when they are presented on MHC molecules. Cytotoxic T cells (Tc cells) are a type of T cell that can directly kill infected or abnormal cells. They recognize antigens presented on MHC class I molecules, which are found on the Show more…
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T cells recognize antigen when the antigen a. forms a complex with membrane-bound MHC molecules on another host derived cell b. is internalized by T cells via phagocytosis and subsequently binds to T-cell receptors in the endoplasmic reticulum c. is presented on the surface of a B cell on membrane-bound immunoglobulins d. forms a complex with membrane-bound MHC molecules on the T cell e. bears epitopes derived from proteins, carbohydrates, and lipids.
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B cells interacting with helper T cells are stimulated to differentiate when ________. A. helper T cells release cytokines B. B cells produce IgE antibodies C. cytotoxic T cells present the class II MHC molecule-antigen complex on their surface D. helper T cells differentiate into cytotoxic T cells
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