Name the enzyme that facilitates opening of DNA helix during transcription.

Name the enzyme that facilitates opening of DNA helix during transcription.
  1. DNA helicase
  2. DNA polymerase
  3. RNA polymerase
  4. DNA ligase

Solution

The process of copying genetic information from one strand of the DNA into RNA is known as transcription. The enzyme the catalyzes transcription is DNA-dependent RNA polymerase. It binds to the promoter site of DNA and facilitates the opening up of DNA helix by breaking H-bonds between two strands of DNA. This opening up of the DNA helix is called a transcriptional bubble.

Asked in: NEET 2020 (Phase 1)

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