NEET MCQ
https://amzn.eu/d/fc8rWiq 1. Which of the following statements about DNA polymerase is incorrect? A) It can only add nucleotides to the 3' end of a growing DNA strand. B) It can proofread and correct errors during DNA replication. C) It requires a primer to begin DNA synthesis. D) It can initiate DNA synthesis de novo without any pre-existing nucleic acid template. Answer: D) It can initiate DNA synthesis de novo without any pre-existing nucleic acid template. Explanation: DNA polymerase is an enzyme that adds nucleotides to a growing DNA strand during DNA replication. It requires a pre-existing nucleic acid template, such as a single-stranded DNA or RNA molecule, to begin DNA synthesis. It can only add nucleotides to the 3' end of a growing DNA strand because it uses the 3'-OH group of the previous nucleotide as a primer for the next nucleotide. DNA polymerase can proofread and correct errors during DNA replication, which helps to maintain the accuracy of DNA replication.