Which of the following statements about DNA polymerase III holoenzyme from E. coli are correct. 1. It elongates a growing DNA chain approximately 100 times faster than does DNA polymerase I. 2. It...

Extracted text: Which of the following statements about DNA polymerase III holoenzyme from E. coli are correct. 1. It elongates a growing DNA chain approximately 100 times faster than does DNA polymerase I. 2. It associates with the parental template, adds a few nucleotides to the growing chain, and then dissociates prior to initiating another synthesis cycle. 3. It maintains a high fidelity of replication, in part by acting in conjunction with a subunit containing a 3' -> 5' exonuclease activity. 4. When replicating DNA, it is a molecular assembly composed of at least eight different kinds of subunits.