题目内容

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

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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

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

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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:()

The enzyme that releases the positive supercoiled structure of DNA is:()

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.()

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