Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

What is the role of helicase in DNA replication?
Options
A Unwinding the DNA double helix
Correct Answer
B Adding nucleotides to the growing strand
C Joining Okazaki fragments
D Removing primers
Correct Answer

Option A is the correct answer.

Detailed Explanation

Helicase is an enzyme that uses ATP to break hydrogen bonds between base pairs, unwinding the DNA double helix ahead of the replication fork to create two single-stranded templates.

Hint

It 'unzips' the DNA.

Question Info