PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cytotoxic T cells and Helper T cells are able to identify antigens because they are presented on the ____ protein outside cells.
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major histocompatibility complex (MHC)
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voltage gated ion channels
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sodium potassium pump
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phospholipids
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Explanation:
Detailed explanation-1: -There are two main types of T-cells: Helper T-cells stimulate B-cells to make antibodies and help killer cells develop. Killer T-cells or cytotoxic T-cells directly kill cells that have already been infected by a foreign invader.
Detailed explanation-2: -Cytotoxic T cells recognize foreign peptides in association with class I MHC proteins, whereas helper T cells recognize foreign peptides in association with class II MHC proteins.
Detailed explanation-3: -Each T cell has a unique T cell receptor (TCR) that recognizes a specific antigen. TCRs recognize an antigen when they bind with major histocompatibility complex (MHC) molecules on the surface of other cells.
There is 1 question to complete.