Which is true of the exonuclease activity of DNA polymerase III?Group of answer choicesIt is used to replace an RNA nucleotide from the primer sequence with a DNA nucleotide.It is involved in phosphodiester bond hydrolysis at the 5’ end of a DNA strand.It moves in the 5’ to 3’ direction on the replicated strandThe product of its enzymatic activity is dAMP, dCMP, dGMP or dTMP.

Which is true of the 5' - 3' exonuclease activity of DNA polymerase I?Group of answer choicesIt proofreads the DNA replication process of polymerase IIt can remove RNA primers via hydrolysis of their phosphodiester backbone linkages.It proofreads the DNA replication process of polymerase IIIIt is involved in synthesis of Okazaki fragments on the lagging strand.

The proofreading activity, to maintain the fidelity of DNA synthesis,Group of answer choicesis a function of the 3'→5' exonuclease activity of DNA polymerasesis a function of the 5'→3' exonuclease activity of DNA polymerase IIIoccurs only when the DNA polymerase on the lagging strand encounters the previously synthesised fragmentoccurs after the DNA replication process has been completed

Which activity of DNA polymerase I is its 'proofreading' activityGroup of answer choices5' to 3' exonuclease activityDNA polymerase I doesn't have this activityBoth 5' to 3' and 3' to 5' exonuclease activities3' to 5' exonuclease activity

Which of the following reactions is required for proofreading during DNA replication by DNA polymerase III?Group of answer choices5'→3' exonuclease activity3'→5' endonuclease activity5'→3' endonuclease activity3'→5' exonuclease activity

DNA Polymerase IIIGroup of answer choicesSynthesizes primerRemoves primerProofreads new DNAJoins Okasaki fragmentsUnzips the DNA helixNext