Sunday, May 6, 2007

Bioligy Test This day

1 . Which of the following is not part of the body's innate, nonspecific defense system?
natural killer (NK) cells
inflammation
phagocytosis by neutrophils
phagocytosis by macrophages
antibodies
2 . Which of the following is a characteristic of the early stages of local inflammation?
arteriole constriction
fever
attack by cytotoxic T cells
release of histamine
antibody- and complement-mediated lysis of microbes
3 . Which of the following is not a component of an insect's defense against infection?
phenoloxidase activation, leading to the formation of large deposits around parasites
activation of natural killer cells
phagocytosis by hemocytes
production of antimicrobial peptides
a protective exoskeleton

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