Mastering DNA Replication

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Questions and Answers

What is the role of the 3’ to 5’ exonuclease subunit of DNA polymerase during DNA replication?

  • It recognizes and corrects mismatch nucleotides
  • It creates mismatch nucleotides
  • It replaces RNA primer gap with DNA
  • It proofreads and corrects mismatch errors (correct)

What is the defense mechanism used when DNA polymerase fails to correct mismatch errors during DNA replication?

  • DNA translation system
  • DNA replication system
  • DNA transcription system
  • DNA repair system (correct)

What is the consequence of the DNA mismatch repair system failing to correct a mismatch error during DNA replication?

  • It corrects the error in the next replication cycle
  • It has no effect on the DNA sequence
  • It creates a temporary mutation
  • It creates a permanent mutation (correct)

Which DNA polymerase subunit is responsible for replacing the RNA primer gap with DNA during DNA replication?

<p>3’-5’ exonuclease subunit of DNA polymerase I (C)</p> Signup and view all the answers

What is the function of the DNA repair system in DNA replication?

<p>To recognize and correct mismatch nucleotides (D)</p> Signup and view all the answers

What is the function of the 3'-5' exonuclease subunit of DNA polymerase during DNA replication?

<p>It proofreads and corrects mismatch errors (C)</p> Signup and view all the answers

What happens if the DNA mismatch repair system fails to correct the error during DNA replication?

<p>It creates a permanent mutation (A)</p> Signup and view all the answers

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