Viruses

1. What do viruses need in order to replicate?

  1. Nutrients from soil
  2. Sunlight
  3. Oxygen
  4. Host cells
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Answer: Option D. Host cells

2. What was the cause of the recently eradicated disease known as “Rinderpest”?

  1. Bacteria
  2. Parasites
  3. Virus
  4. Fungi
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Answer: Option C. Virus

3. In what situation is reverse transcriptase considered a beneficial enzyme?

  1. During DNA replication
  2. In the synthesis of RNA from DNA
  3. When converting RNA to DNA
  4. In protein synthesis
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Answer: Option C. When converting RNA to DNA

4. Which disinfectant is proven to be effective against viruses?

  1. Bleach
  2. Petrol
  3. Vinegar
  4. Water
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Answer: Option A. Bleach

5. Which of the following correctly defines Bacteriophage?

  1. A type of fungus
  2. A virus that infects bacteria
  3. A form of bacteria
  4. A protozoan
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Answer: Option B. A virus that infects bacteria