Which of the following statements is false?
A) Cytotoxic T cells kill body cells that have been invaded by pathogens.
B) The cell-mediated response is ineffective against a pathogen that has already entered the cytoplasm of a body cell.
C) Cytotoxic T cells are produced by the bone marrow but mature in the thymus gland.
D) Cytotoxic T cells are unable to destroy free-floating viruses they encounter in the bloodstream.
E) Cytotoxic T cells secrete perforins that are able to punch holes in infected cells.
Correct Answer:
Verified
Q75: The cell-mediated response
A)involves helper T cells.
B)involves the
Q76: Which antibody makes up most of the
Q77: Which antibody is the main immunoglobulin in
Q78: Effector cells
A)are fully differentiated lymphocytes.
B)manufacture and secrete
Q79: Which antibody induces inflammation after antigen invasions?
A)IgG
B)IgA
C)IgD
D)IgM
E)IgE
Q81: The word "vaccination" comes from the Latin
Q82: A person sensitive to bee venom may
Q83: Whenever the body is exposed to an
Q84: The first vaccinated organism was a
A)cow.
B)rat.
C)young boy.
D)mouse.
E)dog.
Q85: HIV is most commonly transferred by
A)casual contact.
B)food.
C)water.
D)sexual
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