The wrong statement about the semi-discontinuous synthesis of DNA is:()
A. Leading strand is synthesized continuously
B. Lagging strand is synthesized discontinuously
C. The discontinuously synthetic fragments are Okazaki fragments
D. Half of the leading strand as well as half of the lagging strand is discontinuously synthesized
E. Synthesis of lagging strand is later than the leading strand
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The function of DNA topoisomerase is:()
A. Identifying the origin of replication
B. Straightening out the DNA strand during replication
C. Stabling DNA molecule topological conformation
D. Opening the hydrogen bond between the DNA double helix
E. Making DNA molecule become positive supercoiled
Which of the following statement about the role of helicase in DNA replication is NOT true:()
A. to open hydrogen bond between the base pair
B. will consume ATP to provide energy
C. It will bind to the DNA double helix
D. Its activity is activated by DNA replication complex
The enzyme that releases the positive supercoiled structure of DNA is:()
A. Primase
B. Helicase
C. Gyrase
D. Telomerase
E. Ligase
InE.coli, yeast and virus, DNA replication is initiate at a specific origin site, which consists of several short tandem repeats and binds to initiate proteins.()
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