DNA Ligase and Replication
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Questions and Answers

Which enzyme catalyzes the linkage between the 5'-phosphate group on the DNA synthesized by DNA polymerase III (Okazaki) and the 3'- hydroxyl group on the DNA made by DNA polymerase I (RNA primer replaced by DNA)?

  • RNA primer
  • DNA polymerase I
  • DNA polymerase III
  • DNA ligase (correct)
  • Which enzyme replaces the RNA primer with DNA during DNA replication?

  • DNA polymerase I (correct)
  • DNA ligase
  • DNA polymerase III
  • RNA polymerase
  • What is the function of DNA ligase during DNA replication?

  • Proofreads newly synthesized DNA strands
  • Synthesizes new DNA strands
  • Links Okazaki fragments with phosphodiester bonds (correct)
  • Removes RNA primers
  • Which enzyme synthesizes the RNA primer during DNA replication?

    <p>RNA polymerase</p> Signup and view all the answers

    Which group on the DNA synthesized by DNA polymerase III (Okazaki) is linked to the 3'- hydroxyl group on the DNA made by DNA polymerase I (RNA primer replaced by DNA) by DNA ligase?

    <p>5'-phosphate group</p> Signup and view all the answers

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