RNA polymerase differs from DNA polymerase:
Ans: b (Synthesizes RNA primer) Ref: Vasudevan, 4th ed, p. 406; 5th ed, p. 424; Lippincott, p.402DNA polymerases require a primer (RNA primer) where as RNA polymerase does not. This short primer is synthesized by primase (RNA polymerase)Comparison of dna and rna polymerase DNA POLYMERASERNAPOLYMERASE Nucleic acid synthesized(5'-3')DNARNA Required template {option d)}(Copied 3' - 5')DNA*DNA* Required substratesd-ATP, d-GTP, d-CTP, d-TTPATP, GTP, CTP, UTP Required primerRNA (DNA)None Proof reading activity( 3'- 5' exonuclease )YesNo certain DNA and RNA polymerases require RNA templates e.g., viruses.Similarities include: Newly synthesized strand is made in the 5'-3' direction {option c) - so both synthesize in 5'-3' direction}. Template strand is scanned in the 3'-5' direction. The new strand is complementary and anti parallel to the template. Each new nucleotide added to 3' end of growing strand.
It edits and synthesis
Synthesise RNA primers
Synthesis only in 5' to 3' direction
Uses RNA templates
Molecular Genetics