What is the function of DNA polymerase III in replication in E.coli?
A)to unwind the DNA helix during replication
B)to seal together the broken ends of DNA strands
C)to add nucleotides to the 3' end of a growing DNA strand
D)to degrade damaged DNA molecules

Question

Quizplus · Accepted Answer

DNA polymerase III is a key enzyme in DNA replication in E.coli. Its main function is to add nucleotides to the 3' end of a growing DNA strand, thus extending the strand in the 5' to 3' direction. This process requires a template strand to base-pair with and a primer to initiate the addition of nucleotides. DNA polymerase III has high processivity, meaning that it can add many nucleotides before dissociating from the template strand. This makes it well-suited for the rapid and accurate replication of the entire E.coli genome during cell division.

What Is the Function of DNA Polymerase III in Replication