Question

dna polymerase iii
multiple choice
synthesizes new dna only in the 5 to 3 direction
all of the choices are correct.
synthesizes an rna primer
cannot add nucleotides to the lagging strand
is needed for adding nucleotides during mrna synthesis

Explanation:

DNA polymerase III is an enzyme involved in DNA replication. It synthesizes new DNA in the 5' to 3' direction. RNA primers are synthesized by primase, not DNA polymerase III. DNA polymerase III can add nucleotides to the lagging strand (in the form of Okazaki fragments). mRNA synthesis (transcription) involves RNA polymerase, not DNA polymerase III. Since only the first option is correct, the option "All of the choices are correct" is wrong.

Answer:

synthesizes new DNA only in the 5' to 3' direction