MCQ
RNA retrovirus has a special enzyme that:
- ATranscribes viral RNA to DNA
- BTranslates host DNA
- CPolymerizes host DNA
- DDisintegrates host DNA
Explanation:
RNA retroviruses have reverse transcriptase enzyme which synthesizes DNA using RNA template, the process is called reverse transcription because the process goes in just opposite direction to normal transcription. A DNA strand is always first transcribed into RNA which is then translated into protein; DNA is never translated into protein which makes option B wrong.
DNA polymerization is characteristic of DNA polymerases which are found in all organisms and are not unique to retroviruses; option C is wrong.
DNA disintegration is characteristic of nucleases which can cut the DNA randomly or at specific sites. Nucleases are universal in occurrence; option D is wrong.
The correct option is A.
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