Positive-Sense RNA Viruses: The Role of ssRNA as mRNA

In positive sense RNA viruses, the ssRNA acts as:a. tRNAb. rRNAc. mRNAd. all of the above

c. mRNA

In positive sense RNA viruses, the ssRNA acts as mRNA.

Positive-sense RNA viruses have a single-stranded RNA genome that is similar in structure to messenger RNA (mRNA). The RNA acts as a template for the translation of viral proteins by the host cell’s ribosomes. The viral RNA is directly translated into a polyprotein, which is then cleaved into functional proteins by viral proteases. These proteins are necessary for viral replication and assembly.

Therefore, Option C is the correct answer.

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