The wrong explanation for low error rate of DNA replication in prokaryotic cell is:()
A. DNA Pol I have 3’ →5’ exonuclease activity
Both DNA Pol I and III have proofreading function
C. DNA Pol III have 5’ →3’ exonuclease activity
DNA Pol III have 3’ →5’ exonuclease activity
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Which of the following statement about DNA polymerases in E.coli is NOT true:()
A. DNA Pol I can be divided into two subunits
B. DNA Pol I have 5’ →3’ exonuclease activity
C. DNA Pol III is very important for the extension of DNA strands during replication
DNA Pol III consists of four subunits
E. Use four kinds of deoxyribonucleotides as substrate
The enzyme that releases the DNA supercoiled structure is:()
A. DNA polymerase
B. helicase
C. topoisomerase
D. telomerase
E. single-strand binding protein
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
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