DNA polymerase III
A)Is needed for adding nucleotides during mRNA synthesis
B)Synthesizes new DNA only in the 5' to 3' direction
C)Cannot add nucleotides to the lagging strand
D)Synthesizes an RNA primer
E)All of the choices are correct

Question

Quizplus · Accepted Answer

DNA polymerase III is the main enzyme responsible for replicating the bacterial genome. It synthesizes new DNA in the 5' to 3' direction, meaning that it adds nucleotides to the 3' end of the growing DNA strand. This process occurs in both the leading and lagging strands during DNA replication. However, DNA polymerase III cannot add nucleotides to the lagging strand continuously, it synthesizes them in short fragments called Okazaki fragments. Additionally, DNA polymerase III does not have a role in mRNA synthesis, nor does it synthesize RNA primers.

DNA Polymerase III