객관식In the overview of DNA replication, which enzyme is responsible for “unzipping” the DNA double helix by breaking hydrogen bonds between base pairs?92views
객관식During DNA replication, which enzyme unwinds ("unzips") the parental DNA double helix at the replication fork?97views
객관식In the overview of DNA replication, what is the primary role of topoisomerase at the replication fork?111views
객관식During DNA replication, which enzyme initiates DNA synthesis by creating a short RNA segment (primer) that provides a free 3′OH group for DNA polymerase?87views
객관식During DNA replication, what stabilizes the unwound single-stranded DNA to prevent it from reannealing or forming secondary structures?93views
객관식In the context of an overview of DNA replication, what is the primary purpose of DNA replication in cells?91views
객관식In DNA replication, what is the direct substrate used by DNA polymerase to synthesize a new DNA strand?110views
객관식During DNA replication, what is the primary role of DNA gyrase (a bacterial type II topoisomerase) ahead of the replication fork?94views