Multiple ChoiceIn the polymerase chain reaction (PCR), which enzyme synthesizes (builds) the new DNA strands during the extension step?14views
Multiple ChoiceIn a standard DNA extraction protocol, why is detergent (e.g., SDS) added to the sample?11views
Multiple ChoiceIn a standard DNA extraction protocol, what is the primary purpose of adding isopropyl alcohol to the lysate?8views
Multiple ChoiceIn agarose gel electrophoresis, how are DNA or RNA molecules typically visualized on the gel after separation?10views
Multiple ChoiceIn agarose gel electrophoresis, why is bromophenol blue added to individual DNA samples before loading them into the gel?5views
Multiple ChoiceDNA fragments can be separated by gel electrophoresis because they differ in which property that affects their migration through the gel under an electric field?10views