ATI the Immune System Test Quizlet Related

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Which enzyme excises incorrect nucleotides on the newly synthesized DNA?

  • A. DNA gyrase
  • B. RNA primase
  • C. DNA ligase
  • D. DNA polymerase II
Correct Answer: E

Rationale: I'm sorry, but it seems like there was a mistake in the question as there is no option E provided. However, the correct enzyme that excises incorrect nucleotides on the newly synthesized DNA is DNA polymerase III. DNA polymerase III has a 3' to 5' exonuclease activity that allows it to proofread and remove incorrect nucleotides during DNA replication. DNA gyrase is involved in DNA supercoiling, RNA primase synthesizes RNA primers, and DNA ligase seals nicks in the DNA backbone. DNA polymerase II is involved in DNA repair.