Multiple ChoiceIn the overview of DNA replication, which enzyme is responsible for “unzipping” the DNA double helix by breaking hydrogen bonds between base pairs?74views
Multiple ChoiceDuring DNA replication, which enzyme unwinds ("unzips") the parental DNA double helix at the replication fork?71views
Multiple ChoiceIn an overview of DNA replication, what is the main goal of DNA replication in a cell?83views
Multiple ChoiceIn the overview of DNA replication, what is the primary role of topoisomerase at the replication fork?80views
Multiple ChoiceMultiple origins of replication on the DNA molecules of eukaryotic cells serve to:152views
Multiple ChoiceDuring DNA replication, which enzyme initiates DNA synthesis by creating a short RNA segment (primer) that provides a free 3′OH group for DNA polymerase?67views
Multiple ChoiceDuring DNA replication, what stabilizes the unwound single-stranded DNA to prevent it from reannealing or forming secondary structures?71views
Multiple ChoiceIn the context of an overview of DNA replication, what is the primary purpose of DNA replication in cells?78views
Multiple ChoiceIn DNA replication, what is the direct substrate used by DNA polymerase to synthesize a new DNA strand?83views
Multiple ChoiceDuring DNA replication, what is the primary role of DNA gyrase (a bacterial type II topoisomerase) ahead of the replication fork?70views