AP Biology Replication

Which number best represents DNA polymerase?

• 2

• 3

• 5

• 6

• 9

If the replication fork shown continues to open a leading strand will be created using the ____ strand.

• top

• bottom

Match the following enzymes to their roles in DNA replication.

• Synthesizes the new strands of DNA

• Ligase

• Fills in the gaps in the new DNA strands

• DNA polymerase

• Unwinds the parent DNA strands

• Primase

• Adds a small RNA "primer"

• Helicase

Tags

IST-1

The _____ strand is made in short fragments during DNA replication

• leading

• lagging

New nucleotides are added to the ___ end of an already placed nucleotide.

• 3'

• 5'

A replication bubble contains ____ replication forks

• 1

• 2

• 3

• 4

• 5

As the replication fork unzips, a new primer would need to be added to the ____ strand

• leading

• lagging

A template reads 3'-ATTCG-5'. The complementary strand would read...

• 3'-TAAGC-5'

• 5'-TAAGC-3'

• 3'-UAAGC-5'

• 3'-UAAGC-5'

Which number best represents topoisomerase?

• 2

• 3

• 5

• 6

• 9

Which enzyme is responsible for relaxing supercoiling in front of the replication fork?

• helicase

• DNA polymerase

• topoisomerase

• ligase