KROK 1 2014 – Question 126 · KROK (Medicine) · Biological Chemistry

During cell division, DNA replication occurs by a signal from the cytoplasm, and a certain portion of the DNA helix unwinds and splits into two individual strands. What enzyme facilitates this process?

  1. A. DNA polymerase
  2. B. Helicase
  3. C. Restrictase
  4. D. Ligase
  5. E. RNA polymerase
Hint

Sort the listed enzymes by the step of replication or transcription they serve, and pick the one that has to work before new strand synthesis can begin.

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