What is the role of reverse transcriptase in HIV?

• A. Converts RNA to protein
• B. Converts DNA to RNA
• C. Converts RNA to DNA
• D. Converts protein to RNA

Answer: (C)

Reverse transcriptase plays a crucial role in the life cycle of HIV by converting the viral RNA genome into DNA. This process is essential for the integration of the viral genetic material into the host cell’s genome, allowing the virus to replicate effectively.

Once HIV enters a host cell, the reverse transcriptase enzyme synthesizes a complementary DNA (cDNA) strand using the viral RNA as a template. This cDNA is then processed and integrated into the host cell’s DNA by another viral enzyme called integrase. Once integrated, the viral DNA can be transcribed and translated using the host’s cellular machinery to produce new viral particles.

This function of reverse transcriptase distinguishes retroviruses like HIV from other viruses, which may carry their genetic material in the form of DNA or RNA but do not require the conversion of RNA to DNA for replication. The other options do not accurately describe the function of reverse transcriptase in the context of HIV, as the enzyme specifically facilitates the conversion of RNA to DNA.