Certain traits that allow pathogens to create infection and cause disease are termed

A) hyaluronidases.
B) streptokinases.
C) virulence factors.
D) collagenases.


Ans: C) virulence factors.

Biology & Microbiology

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Which of the following groups contain vessels as their primary form of water transport?

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Evolutionarily, the jaws of vertebrates developed from

A. the circular mouth of lampreys. B. the last pharyngeal arch of jawless fishes. C. the third pharyngeal arch of jawless fishes. D. the operculum. E. the claspers.

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It is through ____ that we further our knowledge of living things

a. ideologies b. biological research c. philosophy d. ethics e. logic

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Four of the five answers listed below are actions mediated by the sympathetic nervous system. Select the exception

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Biology & Microbiology