题目内容

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

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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.()

The binding of DnaA to the replicator is sequence specific.()

SeqA protein and methyltransferase Dam in E.coli would competitively bind to methylated GATC sequence.()