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Virology Exam 2 Questions with Correct Answers
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Virology Exam 2 Questions with Correct Answers
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Virology Exam 2 Questions with Correct AnswersWhich statement about viral DNA synthesis is NOT correct?
1. Large DNA viruses encode many proteins involved in DNA synthesis
2. Small DNA viruses encode at least one protein involved in DNA
synthesis
3. Viral DNA replication is always delayed after infection because it
requires the synthesis of at least one viral protein
4. Some viruses encode all proteins needed for DNA replication Correct
Answer-4. Some viruses encode all proteins needed for DNA replication
The SV40genome is a circular dsDNA. Which statement about its
replication is correct?
1. Viral T antigen binds and unwinds the ori
2. Replication is bidirectional from a single ori
3. The 5'‐end problem is solved
4. Has leading and lagging strand synthesis
5. All of the above Correct Answer-5. All of the above
How is DNA replication of parvovirus and adenovirus similar?
1. They both require protein‐linked primers
2. Replication occurs by strand displacement
3. DNA synthesis occurs in the cytoplasm
4. A replication fork occurs in both
, 5. None of the above Correct Answer-2. Replication occurs by strand
displacement
What makes poxvirus DNA replication different from all of the other
viruses we discussed so far?
1. The complete replication machinery is encoded by the viral genome
2. DNA synthesis occurs in the nucleus
3. DNA synthesis occurs by strand displacement
4. DNA replication occurs in cytoplasmic DNA "factories"
5. None of the above Correct Answer-4. DNA replication occurs in
cytoplasmic DNA "factories"
Reverse transcriptase has revolutionized molecular biology. Which
statement about the enzyme is not correct?
1. RT is unique to retroviruses
2. RT is packaged in the retrovirus particle
3. The RT protein also has RNAse H activity
4. The name of the enzyme comes from its ability to reverse the flow of
genetic information
5. Might have bridged the ancient RNA world and the DNA worlds
Correct Answer-1. RT is unique to retroviruses
Which of the following steps occur during reverse transcription of
retroviral genomic RNA?
1. Priming of (‐) DNA synthesis by tRNA
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