The common characteristic of DNA replication in eukaryotes to prokaryotes is:()
A. The direction of synthesis is 5’ →3’
B. The length of Okazaki fragments is similar.
C. Both of them have several replication origins
D. The speed of DNA replication is similar.
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
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
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