Outer covering of virus, which is made up of protein, is known as

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(a) Capsid — A virus is made up of a core of genetic material which is surrounded by capsid. The capsid is a protein sheet which surrounds the virus and is composed of a finite number of protein subunits known as capsomeres. The capsid has three functions. It protects the nucleic acid from digestion by enzymes. It contains special sites on its surface that allow the virion to attach to a host cell. Capsid also provides proteins that enable the virion to penetrate the host cell membrane.

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(B) Coat

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(C) Virion

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(D) Viroid

Outer covering of virus, which is made up of protein, is known as

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