DNA Replication

Which enzyme is responsible for unwinding the DNA double helix prior to replication?

• DNA polymerase I

• DNA polymerase III

• Helicase

• Ligase

Which enzyme fixes the Okazaki fragments in the lagging strand?

• Helicase

• Polymerase

• Ligase

• Primerase

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'

Tags

NGSS.HS-LS1-1

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

• Okazaki fragments

• Polymer gaps

• Helicase fragments

• Acidic gaps

This picture is illustrating the ____ nature of DNA.

• anti-parallel
• deoxyribosic
• helical
• radioactive

Tags

NGSS.HS-LS1-1

3' and 5' refer to...

• How effectively the helicase works

• What direction the nucleotides are pointing

• Where the RNA primer attaches

• Okazaki's famous experiment

The enzyme that splits open the DNA creates what's called a fork - where the DNA separates into the lagging strand and the ______ strand.

• leading

• leveraging

• Okazaki

• ligase

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

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

A DNA nucleotide contains all of the following, except...

• Deoxyribose

• Phosphate group

• Nitrogenous base

• Cholesterol

Tags

NGSS.HS-LS1-1

What is the shape of DNA?

• Double helix

• Triple helix

• Flat, bilayer

• Three-pronged rigid ladder

Tags

NGSS.HS-LS1-1