The extraordinary accuracy of the DNA polymerase III enzyme lies in its ability to "proofread" newly synthesized DNA, a function of the enzyme's__________ .
A) 3'- to- 5' helicase activity
B) 5'- to- 3' polymerase activity
C) 3'- to- 5' exonuclease activity
D) 5'- to- 3' exonuclease activity
E) 3'- to- 5' polymerase activity

Question

Quizplus · Accepted Answer

The 3'- to- 5' exonuclease activity of DNA polymerase III allows it to remove incorrectly paired nucleotides, thereby "proofreading" the newly synthesized DNA strand and ensuring high fidelity during DNA replication.

The Extraordinary Accuracy of the DNA Polymerase III Enzyme Lies