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Question

Which one of the following statements about viruses is correct?

A
Viruses possess their own metabolic system
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B
All viruses contain both RNA and DNA
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C
Viruses are obligate parasites
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D
Nucleic acid of viruses is known as capsid
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Solution

The correct option is C Viruses are obligate parasites
All viruses are obligate parasites. They lack metabolic machinery of their own to generate energy or to synthesize proteins. So, they depend on host cells to carry out these vital functions. Most viruses have either RNA or DNA as their genetic material. Capsid is the protein covering the genetic material.

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