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andrew-mc [135]
3 years ago
6

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.
Biology
1 answer:
Dahasolnce [82]3 years ago
3 0

Answer:

  • helicase - breaks H-bonds between bases; binds at the replication fork
  • topoisomerase - breaks covalent bonds in DNA backbone; binds ahead of the replication fork
  • single-strand binding - prevents H-bonds between bases; binds after the replication fork

Explanation:

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 - breaks H-bonds between bases; binds at the replication fork
  • topoisomerase - breaks covalent bonds in DNA backbone; binds ahead of the replication fork
  • single-strand binding - prevents H-bonds between bases; binds after the replication fork
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