PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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T cells fight pathogens by killing pathogens directly, while B cells fight pathogens by making antibodies.
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T cells only make memory cells, and B cells only make antigens
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T cells fight pathogens by making antibodies, while B cells fight pathogens by killing pathogens directly.
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T cells can only fight off pathogens the body has encountered once, and B cells can fight off any pathogen the body comes across.
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Detailed explanation-1: -Both types are part of your body’s defense. B-cells make proteins called antibodies to fight pathogens. T-cells protect you by destroying harmful pathogens and by sending signals that help control your immune system’s response to threats.
Detailed explanation-2: -T cells are responsible for cell-mediated immunity. B cells, which mature in the bone marrow, are responsible for antibody-mediated immunity. The cell-mediated response begins when a pathogen is engulfed by an antigen-presenting cell, in this case, a macrophage.
Detailed explanation-3: -T cells can wipe out infected or cancerous cells. They also direct the immune response by helping B lymphocytes to eliminate invading pathogens. B cells create antibodies.
Detailed explanation-4: -Armed effector cytotoxic CD8 T cells are essential in host defense against pathogens that live in the cytosol, the commonest of which are viruses. These cytotoxic T cells can kill any cell harboring such pathogens by recognizing foreign peptides that are transported to the cell surface bound to MHC class I molecules.