Which of the following is correctly matched with its subsequent role?

[answerhappygod]

a) Topoisomerase II- can remove both positive and negative supercoil in the DNA duplex
b) Polymerase I- larger fragment responsible for exonuclease activity
c) DnaA protein- responsible for “melting” of the DNA double helix during replication
d) DnaB protein- attaches to the newly unwounded single strand of DNA to prevent folding of the strand