Scelta multipla
Interferons and complement are examples of which of the following?
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21. The Immune System
Introduction to the Immune System
Scelta multipla
Which of the following cells is responsible for destroying virus-infected cells?
A
Cytotoxic T cells
B
Macrophages
C
B cells
D
Helper T cells
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Understand the role of each cell type mentioned in the problem. Cytotoxic T cells, macrophages, B cells, and helper T cells each have distinct functions in the immune system.
Cytotoxic T cells are a type of lymphocyte that directly attack and destroy virus-infected cells. They recognize infected cells by detecting viral antigens presented on the surface of these cells.
Macrophages are large phagocytic cells that engulf and digest pathogens and debris. They are part of the innate immune system and do not specifically target virus-infected cells.
B cells are responsible for producing antibodies that bind to antigens, marking pathogens for destruction by other immune cells. They do not directly destroy virus-infected cells.
Helper T cells assist other cells in the immune response by releasing cytokines that stimulate the activity of B cells and cytotoxic T cells. They do not directly destroy virus-infected cells.
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