1. What is the relationship between the virus structure and its function in the virus model? 2. How do mutations affect the ability of a virus to infect a cell?

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Explanation:

ANSWER OF 1ST QUESTION -

1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic .

ANSWER OF 2ND QUESTION -

Mutations can produce viruses with a reduced pathogenicity, altered host range, or altered target cell specificity but with intact antigenicity. Such viruses can sometimes be used as vaccine strains.

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