High concentrations of some bacteria are necessary for successful invasion because only at high density are their virulence genes expressed.
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Q37: The process by which infectious agents are
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Q39: Virulent pathogens are
A)more likely to cause disease.
B)more
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Q44: Which is true about superantigens?
A)They are a
Q46: The normal microbiota provides protection against potentially
Q47: Infection always leads to disease.
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Q52: C5a peptidase
A) is a virulence factor.
B) synthesizes
Q59: Only Gram-positive bacteria produce exotoxins.
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