Q. Which of these is a reverse transcriptase?
1. DNA-dependent RNA polymerase
2. DNA-dependent DNA polymerase
3. RNA-dependent RNA polymerase
4. RNA-dependent DNA polymerase
Answer: 4 (RNA-dependent DNA polymerase)
An enzyme that uses DNA to synthesize RNA is called DNA-dependent RNA polymerase or transcriptase.
An enzyme that catalyzes the synthesis of a new DNA strand using a template DNA strand is called DNA-dependent DNA polymerase or DNA replicase.
An enzyme that catalyzes the replication of RNA from an RNA template is called RNA-dependent RNA polymerase or RNA replicase.
An enzyme that catalyzes the synthesis of a DNA strand using RNA as a template strand is called RNA-dependent DNA polymerase or reverse transcriptase.
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