Question

The main role of DNA polymerase III is

• A. addition and polymerization of nucleotides from 5' end to 3' end.
• B. as major repair enzyme from 5' end to 3' end.
• C. removal of DNA primer from 5' end.
• D. addition and polymerization of nucleotides from 3' end to 5' end.

Answer 1

Answer: (A)

DNA polymerase III is an important enzyme that can polymerase in 5' to 3'. Also, it has 3' to 5' exonuclease proofreading activities. It plays an important role in DNA replication by adding and polymerizing nucleotide bases.
DNA polymerase II has a role in DNA repair.