Following infection, a typical first-line defense of the host's immune system is
A) reduction in white blood cell count.
B) release of antibodies.
C) forming cysts.
D) inflammation.
D
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Which of the following represent(s) the way(s) in which enveloped viruses acquire their envelopes?
A. Some viruses bud through the plasma membrane while other bud through internal cellular membranes. B. Viral enzymes are responsible for production of the envelope. C. Budding through the plasma membrane. D. Budding through internal cellular membranes.
Which of the following does not correctly pair an animal with its food source or strategy?
a. hyenas?dead animals b. baleen whales?suspended particles c. earthworms?plant and animal material d. locusts?other insects e. giraffes?leaves
Which statement best compares aerobic and anaerobic respiration?
a) less atp is generated during anaerobic than during aerobic b) more water is generated during anaerobic than during aerobic c) more O2 is generated during anaerobic than during aerobic
What findings are consistent with an asteroid impact as a cause for the K–T mass extinctions?
a. Ammonites showed elevated extinction rates prior to 65 MYA. b. Dramatic pollen increases coinciding with the iridium spike in geological layers. c. Geological data suggest a period of global warming around 65 MYA. d. A decline in planktonic fossils around 65 MYA that is stronger but similar to a decline of ma-rine productivity caused by a historic volcanic eruption. e. B and D.