Replication

Okazaki fragments are unified into a single continuous strand by the use of this enzyme

• DNA Helicase

• DNA Ligase

• Topoisomerase

• Telomerase

This enzyme is responsible for creating telomeres added to the ends of DNA

• Topoisomerase

• Telomerase

• DNA Helicase

• DNA Primase

Which enzyme is responsible for adding the free nucleotides to the replicating DNA? ​

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

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

The enzyme that unwinds the DNA to prepare for replication

• helicase

• replicase

• polymerase

• synthase

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

• nitrogenous base

• nucleic acid

• cholesterol

• fatty acid

Tags

NGSS.HS-LS1-1

Which 2 molecules forms the sides (backbone) of the DNA ladder?

• deoxyribose and adenine

• deoxyribose and a hydrogen bond

• sugar and the nucleus

• deoxyribose (sugar) and phosphate

Tags

NGSS.HS-LS1-1

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 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