Replication

The enzyme that unwinds the DNA to prepare for replication

• helicase

• replicase

• polymerase

• synthase

Which is the first step?

• DNA Helicase unwinds original DNA strand

• RNA Primase lays down RNA primer for new nucleotide bases.

• DNA polymerase builds new strands by bring in new nucleotide bases.

• Ligase knits together fragments on lagging strand

Nucleotides are made up of a sugar, phosphate, and..?

• nitrogenous base

• nucleic acid

• cholesterol

• fatty acid

Tags

NGSS.HS-LS1-1

Match he nucleotide with its complementary nucleotide. (DNA to DNA).

• Thymine

• Guanine

• Cytosine

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

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

• Okazaki fragments

• Polymer gaps

• Helicase fragments

• Acidic gaps

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

Tags

NGSS.HS-LS1-1

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