DNA Replication

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

• Topoisomerase

• DNA Helicase

• DNA Polymerase

• Exonuclease

What is the purpose of DNA replication?

• Cut the DNA in half 

• Make more cells
• Initiate apoptosis

• Double the amount of DNA

Which enzyme seals okazaki fragments together on the lagging strand?

• Topoisomerase
• Helicase
• Polymerase
• Ligase

What do we call DNA replication since new DNA has 1 parent strand and 1 new strand?

• Conservative 
• Semiconservative 
• Dispersive

What is the backbone of DNA made of?

• Nitrogen bases
• Amino acids
• Hydrogen bonds

• Sugar and phosphate

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 

Which enzyme is responsible for adding nucleotides?

• Topoisomerase
• DNA Polymerase
• Ligase
• Primase

This enzyme synthesizes short RNA sequences to guide DNA Polymerase

• Helicase

• Primase

• Polymerase

• Topoisomerase

Which enzyme is responsible for checking and fixing DNA errors?

• DNA Polymerase

• DNA Primase

• DNA Helicase

• DNA Telomerase

Each DNA molecule created contains one NEW strand and one OLD strand.

• True

• False