As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands. This unwinding and separating of the DNA requires three different types of proteins: helicase, topoisomerase, and single-strand binding proteins.

Sort the phrases into the appropriate bins depending on which protein they describe.
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helicasedroppable
topoisomerasedroppable
single-strand binding proteindroppable

1 answer

Certainly! Let’s categorize the phrases based on the roles of each of the three proteins involved in DNA replication:

Helicase

  • Unwinds the double helix by breaking hydrogen bonds between the base pairs.
  • Separates the two strands of DNA.

Topoisomerase

  • Relieves the tension and supercoiling ahead of the replication fork.
  • Cuts and re-ligates the DNA strands to prevent knots and tangles.

Single-Strand Binding Proteins (SSBs)

  • Binds to the separated single strands of DNA to prevent re-annealing.
  • Stabilizes the unwound DNA strands and protects them from degradation.

Is there any specific phrases you would like categorized? If you provide them, I can assist you further!