Viruses are small organisms which contain the DNA or RNA as their genetic materials. The genetic materials are composed of nucleic acid and proteins. They multiply in all living cells such as humans, animals, bacteria and plants. Viruses do not produces any enzyme for its metabolism ; however they take over the host cell metabolic machineries for its multiplication. RNA-dependent RNA polymerase is an important enzymes that codes in all RNA viruses. It synthesizes the replicate RNA strand from the negative template RNA strand.

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Chapter 13, Problem 3MCQ

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Introduction:

Viruses are small organisms which contain the DNA or RNA as their genetic materials. The genetic materials are composed of nucleic acid and proteins. They multiply in all living cells such as humans, animals, bacteria and plants. Viruses do not produces any enzyme for its metabolism; however they take over the host cell metabolic machineries for its multiplication.

RNA-dependent RNA polymerase is an important enzymes that codes in all RNA viruses. It synthesizes the replicate RNA strand from the negative template RNA strand.

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