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Question
To be most sensitive to a repellant, a methyl-accepting chemotaxis protein must be ________ methylated to initiate a ________.A) fully / run
B) fully / tumble
C) not / run
D) not / tumble
Answer
This answer is hidden. It contains 1 characters.
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Which of the following statements about chlamydial infections is TRUE?
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B) prevalence / mortality
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate.
B) spreads from a common source and could be controlled with adequate clean water and waste sanitation measures.
C) is spread through direct contact and has only a human reservoir.
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Influenza pandemics occur cyclically because
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A) clonal anergy
B) clonal deletion
C) clonal anergy and deletion
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A) one
B) two
C) four
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