Widespread epidemic disease, influenza is caused by:
Correct answer: B. RNA enveloped virus
- A. DNA virus
- B. RNA enveloped virus
- C. DNA enveloped virus
- D. RNA virus
Explanation
Influenza is caused by an enveloped RNA virus.
This question appeared on the UHS MDCAT 2011 paper, which you can sit online with every answer explained.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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