There are _______ major families of DNA containing viruses that infect vertebrates

A.
2

B.
4

C.
5

D.
7


D

Biology & Microbiology

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TCA cycle enzymes are found in the ________ of eukaryotic cells.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which level of organization is required for all others to form?

A. cell B. tissue C. organ D. organism E. population

Biology & Microbiology

Members of the class Bivalvia:A

have gills that secrete the shell. B. have a mantle that may form pearls. C. are all sessile. D. all have a radula. E. have a broad foot used for locomotion.

Biology & Microbiology

The BOD is a measurement of the amount of bacteria present before and after the sewage treatment process

Indicate whether the statement is true or false

Biology & Microbiology