In E. coli, DNA polymerases I and III differ in many regards. Which of the following statements is not accurate? In E. coli, DNA polymerases I and III differ in many regards. Which of the following statements is not accurate? The processivity of DNA synthesis is an order of magnitude greater for DNA polymerase III as compared to DNA polymerase I. DNA polymerase III is responsible for the majority of DNA synthesis in E. coli. DNA polymerase I can replace RNA primers with DNA; DNA polymerase III does not. DNA polymerase I has 5' exonuclease activity; DNA polymerase III does not. DNA polymerase I is able to proofread; DNA polymerase III is not.

DNA polymerase I is able to proofread; DNA polymerase III is not.

Explanation:

Escherichia coli is a gram negative anaerobic bacteria that is found in the gastrointestinal tract of and humans and animals. Escherichia coli has 5 types of DNA polymerase.

a. Polymerase I is used to repair any damaged DNA and proof reading

b. Polymerase II is used in proof reading, DNA Replication and repairs.

c. Polymerase III is primarily responsible for DNA replication. It also has the ability to proof read.

d. Polymerase IV is used to change genetic information of Escherichia coli.

e. Polymerase V is used in DNA repair in Escherchia coli.

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