The enzyme that releases the DNA supercoiled structure is:()
A. DNA polymerase
B. helicase
C. topoisomerase
D. telomerase
E. single-strand binding protein
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Which of the following statements about DNA polymerase III is NOT true:()
A. Deoxyribonucleotide are connected to 5’ hydroxyl of synthesized DNA by DNA pol III
B. To catalyze deoxyribonucleotide connected to the primer
C. Requires four kinds of 5’-dNTP
D. To catalyze deoxyribonucleotide connected to 3’ terminal of RNA primer
E. Pyrophosphate is one of the product
Which of the following enzyme is NOT required during DNA replication?()
A. DNA polymerase which uses DNA as template
B. RNA polymerase which uses DNA as template
C. ligase and gyrase
DNA polymerase which uses RNA as template
E. helicase and topoisomerase
Which of the following statements about prokaryotic and eukaryotic DNA replication is NOT true:()
A. Replication fork are usually advanced to the two sides after initiation of replication
B. The replication direction of two nascent strand is 5'→3'
C. For one DNA template strand, the replication is continuous on one side of replication origin and discontinuous on the other side.
D. Okazaki fragments formation and RNA primer removal would happen in both eukaryotic and prokaryotic cells.
E. The whole process of DNA replication can occur spontaneously without consumption of ATP.
Okazaki fragment refers to()
A. DNA fragments in DNA template
B. DNA fragments synthesized in lagging strand
C. DNA fragments synthesized in leading strand
D. RNA fragments synthesized by primase
E. DNA fragments synthesized by DNA ligase
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