DNA Replication

Which enzyme is responsible for adding nucleotides?

• Topoisomerase
• DNA Polymerase
• Ligase
• Primase

What are the gaps between the newly synthesized DNA on the lagging strand called?

• Okazaki fragments
• Polymer gaps
• Helicase fragments
• Acidic gaps

The process of DNA replication is called semi conservative because it results in

• none of these
• Two DNA molecules.  One original molecule and one with two new strands
• two exact copies with new strands
• two identical molecules, each with 1 original strand and one new.

Which enzyme is responsible for telling DNA polymerase where to start adding complementary bases?

• Helicase

• Amylase

• Ligase

• Primase

Which enzyme fixes the Okazaki fragments in the lagging strand?

• Helicase
• Polymerase
• Ligase
• Primerase

The enzyme that unzips the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase

Polymerase is able to replicate the new DNA ______ along the leading strand.

• continuously
• only in short fragments
• very slowly
• prokaryotically

If a strand reads:
3' A A A T T T C 5'
The matching strand would read...

• 5' T T T A A A G 3'
• 3' T T T A A A G 5'
• 5' A A A T T T C 3'
• 3' U U U A A A G 5'

DNA replication results in two DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

This picture is illustrating the ____ nature of DNA.

• anti-parallel
• deoxyribosic
• helical
• radioactive