DNA Replication Lesson

Why is it crucial that living things are able to replicate their DNA?

• Each cell must have its own DNA

• Less copies of DNA are needed when a new cell is created

• A cell needs multiple copies of DNA

• Only muscle cells need DNA 

Tags

NGSS.MS-LS3-1

NGSS.MS-LS3-2

This enzyme ONLY works in one direction which is 5'------> 3'

• DNA Polymerase

• DNA Helicase

• Topoisomerase

• Telomerase

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

• DNA Helicase

• DNA Ligase

• Topoisomerase

• Telomerase

This enzyme is capable of breaking Hydrogen bonds found between the bases of DNA

• Topoisomerase

• DNA Helicase

• DNA Polymerase

• Exonuclease

This enzyme is used to remove short RNA bases

• Topoisomerase

• DNA Helicase

• Exonuclease

• Telomerase

What is the backbone of DNA made of?

• Nitrogen bases

• Amino acids

• Double H

• Sugar & Phosphate

This enzyme helps helicase unzip DNA by relieving supercoiling

• Topoisomerase

• Exonuclease

• DNA Primase

• DNA Polymerase

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

• Topoisomerase

• Telomerase

• DNA Helicase

• DNA Primase

This enzyme synthesizes short RNA sequences to guide DNA Polymerase

• Primers

• DNA Primase

• DNA Polymerase

• Topoisomerase

What is the LAST step of the completion of DNA replication?

• Telomeres are added to ends of DNA

• Ligase glues Okazaki fragments

• DNA polymerase proofreads

• Topoisomerase relieves supercoiling