The enzyme HIV carries inside its capsid to make a DNA copy of its RNA genome is
Correct answer: C. reverse transcriptase
- A. DNA ligase
- B. RNA polymerase
- C. reverse transcriptase
- D. restriction endonuclease
Explanation
Reverse transcriptase copies the viral RNA into DNA, which then integrates into the host chromosome. The direction is the reverse of normal transcription, which is exactly what the name means, and it is this enzyme that drugs like AZT target.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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