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NDA 2023 GAT · General Knowledge · Mole Concept and States of Matter · hard

During DNA replication, the enzyme that unwinds the double helix by breaking hydrogen bonds between the bases is

Single correct option

During DNA replication, the enzyme that unwinds the double helix by breaking hydrogen bonds between the bases is
  1. A. DNA polymerase
  2. B. Ligase
  3. C. Helicase
  4. D. Primase
Show answer and solution

Answer: (C) Helicase

Helicase separates the two strands at the replication fork. DNA polymerase then adds nucleotides, primase makes the RNA primer and ligase joins the fragments, so those enzymes act after the unwinding.
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Original question written in the NDA 2023 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake