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General Biology

Study Pack

Set 19 Viruses

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Question 1

(Multiple Choice)

Free
What is the function of reverse transcriptase in retroviruses?

A)It hydrolyzes the host cell's DNA.
B)It uses viral RNA as a template for DNA synthesis.
C)It converts host cell RNA into viral DNA.
D)It translates viral RNA into proteins.
E)It uses viral RNA as a template for making complementary RNA strands.

Answer

Question 2

(Multiple Choice)

Free
Which of the following is characteristic of the lytic cycle?

A)Many bacterial cells containing viral DNA are produced.
B)Viral DNA is incorporated into the host genome.
C)The viral genome replicates without destroying the host.
D)A large number of phages are released at a time.
E)The virus-host relationship usually lasts for generations.

Answer

Question 3

(Multiple Choice)

Free
Viral envelopes can best be analyzed with which of the following techniques?

A)transmission electron microscopy
B)antibodies against specific proteins not found in the host membranes
C)staining and visualization with the light microscope
D)use of plaque assays for quantitative measurement of viral titer
E)immunofluorescent tagging of capsid proteins

Answer