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Which protein is primarily involved in the unwinding of DNA during replication?

Practice Questions

Q1
Which protein is primarily involved in the unwinding of DNA during replication?
  1. DNA polymerase
  2. Helicase
  3. Ligase
  4. Topoisomerase

Questions & Step-by-Step Solutions

Which protein is primarily involved in the unwinding of DNA during replication?
  • Step 1: Understand that DNA is made of two strands twisted together, forming a double helix.
  • Step 2: Know that during DNA replication, these two strands need to be separated or 'unwound' so that new DNA can be made.
  • Step 3: Identify that there is a special protein called helicase that does this unwinding.
  • Step 4: Realize that helicase moves along the DNA strands and breaks the bonds between them, allowing them to separate.
  • Step 5: Conclude that helicase is the main protein responsible for unwinding DNA during the replication process.
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