Question

An enzyme that uses viral RNA as template for the synthesis of DNA is

• A. RNA polymerase
• B. Reverse transcriptase
• C. Viral nuclease
• D. RNA replicase

Answer 1

The correct option is B Reverse transcriptase

The enzyme reverse transcriptase catalyzes the synthesis of DNA on RNA template. It uses viral RNA as a template for the synthesis of DNA. The process is called reverse transcription. The DNA synthesized is called cDNA (complementary DNA). Temin discovered reverse transcriptase with the help of antibiotic actinomycin-D.

Thus, the correct answer is option B.