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Exam questionKROK 1Medicine ยท 2014

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 strains. What enzyme facilitates this process?

Answer options

  1. DNA polymerase
  2. RNA polymerase
  3. Helicase
  4. Ligase
  5. Restrictase
Correct answer

Helicase

Explanation

DNA helicases separate double-stranded DNA into single strands allowing each strand to be copied during replication. RNA polymerase is an enzyme that produces primary transcript RNA. Ligase is an enzyme that joins two large molecules. Restricts is an enzyme that cuts DNA. DNA polymerase is used to synthesize DNA.

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