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25 July, 20:43

How are viruses different from bacteria?

A. Viruses cannot survive outside a host.

B. Viruses are much larger.

C. Viruses contain only RNA.

D. Viruses are prokaryotes.

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  1. 25 July, 23:22
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    Viruses cannot survive outside a host.

    Explanation:

    Viruses are simple non-cellular entities. They contain one or more molecules of either DNA or RNA enclosed in a protein capsid. They show obligatory parasitism and cannot reproduce outside a living host cells. An infectious virus is termed as virion. A virion injects its DNA or RNA into the host cell which in turn is integrated into the host genome. The viral genome is then gets expressed by the host cell.
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