Question

In eukaryotes, which enzyme catalyzes the formation of 5S rRNA?

• A. RNA polymerase – I
• B. DNA polymerase
• C. RNA polymerase – II
• D. RNA polymerase – III

Answer 1

The correct option is D RNA polymerase – III

RNA polymerase I transcribes rRNA like 28S, 18S and 5.8S.

RNA polymerase II transcribes heterogeneous nuclear RNA.

RNA polymerase III transcribes tRNA, 5srRNA and small nuclear RNA. Therefore, eukaryotic 5S rRNA is synthesized by RNA polymerase III.

DNA dependent DNA polymerase uses DNA as the template and catalyses the polymerisation of deoxyribonucleotides.