Which of the following molecules helps relieve the tension of unwinding parental DNA strands, by breaking DNA and rejoining it before it is replicated?   a. Primase   b. Single-stranded binding proteins   c. Helicase   d. Topoisomerase

DNA replication involves a series of steps, including initiation, making primers, extension, and connecting DNA fragments. The cell uses different enzymes in a particular order to accomplish these steps. Which of the following represents the correct general order of enzyme use? A. DNA polymerases, helicase, primase, ligase B. Helicase, ligase, primase, DNA polymerases C. Helicase, primase, DNA polymerases, ligase D. Primase, helicase, DNA polymerases, ligase

Which enzyme is responsible for unwinding and separating the parental DNA strands? a polymerase b primase c topoisomerase d helicase

The polymerase chain reaction requires the following except A. primers complementary to the ends of the sequence to be amplified B. carefully controlled temperature conditions C. cycles of denaturation, annealing, and extension D. RNA polymerase to synthesize RNA primers