Viruses Quiz
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5 questions, one answer each
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1. Which virus has a DNA genome?
- A. Ebola virus
- B. Lambda phage
- C. Tobacco mosaic virus
- D. HIV
2. What happens to the host cell at the end of the lytic cycle?
- A. It divides
- B. It becomes latent
- C. It bursts, releasing new virus particles
- D. It forms a capsid
3. Why are antibiotics ineffective against viruses?
- A. Viruses are too small
- B. Viruses are resistant to all drugs
- C. Viruses have 70S ribosomes
- D. Viruses have no cell wall or metabolism of their own for the antibiotic to target
4. An RNA virus carries reverse transcriptase. What is the enzyme used for?
- A. Making DNA from the viral RNA
- B. Making RNA from DNA
- C. Digesting the host cell wall
- D. Making ATP
5. Why is controlling the spread of a virus often more effective than treating infected people?
- A. Viruses are non-living so cannot be treated
- B. Antiviral drugs are always cheaper
- C. Viruses are difficult to treat once infection has occurred, because drugs must stop replication without harming host cells
- D. Viruses cannot be passed from person to person