Introduction to DNA Replication

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

Tags

NGSS.HS-LS1-1

The enzyme that breaks the hydrogen bonds between the nitrogen bases to allow for DNA Replication

• helicase
• replicase
• polymerase
• synthase

DNA replication is a semi-conservative process that results in 2 DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Which enzyme is responsible for adding nucleotides ("The Builder")?

• Helicase

• DNA Polymerase
• Ligase
• Primase

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 gluing and connecting parts of newly created DNA fragments together ("The Gluer")?

• Topoisomerase

• DNA Polymerase

• Ligase

• Primase

Which enzyme seals okazaki fragments together on the lagging strand?

• Topoisomerase
• Helicase
• Polymerase
• Ligase

Which of the following sequences expresses the correct order of enzyme function in DNA replication?

• Helicase--DNA polymerase--ligase

• ligase--helicase--DNA polymerase

• DNA polymerase--helicase--ligase

If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?

• 30
• 15
• 20
• 60