DNA Replication Practice

Which enzyme builds a new DNA strand during DNA Replciation?

• DNA Polymerase

• DNA Helicase

• Topoisomerase

• Primase

Identify the components involved in DNA replication.

a

b

c

d

e

f

g

h

i

Leading Strand

DNA Polymerase

Primase

Lagging Strand

Ligase

Helicase

Okazaki Fragments

Single-Strand Binding Proteins

Topoisomerase

Why does DNA replicate?

• To create another copy for the new cell

• To create a duplicate copy in case the original gets damaged

• To create a new copy to replace the damaged original

DNA replication results in

• 2 completely new DNA molecules

• 2 DNA molecules that each contain a strand of the original

• 1 new DNA molecule and 1 old

• 1 new molecule of DNA

Which arrow(s) is pointing to the lagging strand?

Which gray box would be the other 5' end?

Which arrow is pointing to the original DNA strand?

Which arrows are pointing to the leading strands?

Which arrow(s) is pointing to the helicase?

Click where the replication fork(s) would be found at.