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Rna viruses require their own supply of certain enzymes because

The correct answer is option b.
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Lamar Hirthe

Feb 20, 2025

The correct answer is option b.Explanation:RNA viruses have RNA as genetic material whereas the host cells usually have DNA as genetic material.So, in order to integrate its genome with host DNA, the virus must form DNA from RNA, that is, reverse transcription. It is the process by which DNA is formed using RNA as a template strand.However, reverse transcriptase (enzyme which catalyzes reverse transcription) is usually not present in host cells. Thus, RNA viruses carry their own set of enzymes which help in the replication of viral genome and its recombination with host DNA as host cells lack these enzymes.... Show More
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Lamar Hirthe

Feb 20, 2025

Host cells lack various enzymes that can replicate the viral genome of RNA viruses.Explanation: RNA viruses (like  HIV )  first need to convert their genomes into DNA by reverse transcriptase (RT) enzyme, virus supply reverse transcriptase enzyme own-self because host cell do not contain RT enzyme.This DNA is then transcribed into mRNA that can be translated into viral proteins. So host cell lacks many of the enzymes like RT and protease etc  which RNA viruses require.... Show More
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