题目内容

The enzyme closely related to the synthesis of RNA primer is:()

A. DNA pol α;
B. DNA pol γ;
C. DNA pol δ;
DNA pol I;
E. DNA pol III

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Which of the following enzyme has the function of proofreading, repairing and filling the gap?()

A. DNA pol V;
B. DNA ligase ;
C. DNA pol δ;
DNA pol I;
E. DNA pol III

Telomerase is:()

A. DNA ligase
B. RNA polymerase
C. DNA exonuclease
D. Reverse transcriptase
E. Primase

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

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