The host range of a virus is determined by

A. the type of genetic information the virus contains.
B. All of the answer choices are correct.
C. the shape of the virus.
D. specific receptors on cells it infects.
E. the particular life cycle of the virus.


D. specific receptors on cells it infects.

Biology & Microbiology

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Which of these is not found in a strand of DNA?

A) hydrogen bonds B) a 5-carbon sugar C) phosphate groups D) nitrogen-containing bases E) sterols

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Which of the following is a family of double-stranded RNA viruses?

A. Picornaviridae B. Coronaviridae C. Retroviridae D. Reoviridae E. Rhabdoviridae

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BOTH Ferroplasma and Thermoplasma are similar to the mycoplasmas in that they ALL

a. are thermotolerant. b. can oxidize iron. c. lack cell walls. d. withstand acidic conditions.

Biology & Microbiology