Normal biota includes each of the following except ________.

A. viruses
B. protozoans
C. fungi
D. bacteria
E. All of the choices are correct.


Answer: E

Biology & Microbiology

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Which structure is incorrectly paired with its tissue system?

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Which of the following combinations of chromosomes would be typical of a human male? 

A. two X-chromosomes B. an X-and a Y-chromosome C. 2 Y-chromosomes D. None of these is correct.

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Because DNA replication takes place at an extremely rapid rate, a cell must repair breaks in a strand of DNA up to approximately how many times in an hour?

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