DNA replication

Question 1

step one: replication fork forms

Answer 1

helicase unzips DNA

topoisomerase keeps DNA from getting supercoiled

Question 2

step two: primers bind

Answer 2

primers made by DNA primase

Question 3

step three: elongation

Answer 3

DNA polymerase 
(alpha, delta and epsilon in eukaryotes)

Question 4

step four: termination

Answer 4

exonuclease removes primers
ligase joins okazaki fragments
telomeres and telomerase