DNA Replication

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

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.HS-LS3-2

Which enzyme is responsible for adding nucleotides?

• Topoisomerase
• DNA Polymerase
• Ligase
• Primase

The separation of the two single strands of DNA creates a ‘Y’ shape called the _____________?

• enzyme

• unzip

• A replication fork

This enzyme synthesizes short RNA sequences to guide DNA Polymerase

• Primers

• DNA Primase

• DNA Polymerase

• Topoisomerase

Okazaki fragments are found on the _______________ strand

• Leading

• Lagging

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

• DNA Polymerase

• DNA Helicase

• Topoisomerase

• Telomerase

DNA replication results in two 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

Which of the following must happen first in order for DNA replication to occur?

• DNA polymerase binds to the leading strand
• DNA is unwound
• Hydrogen bonds form between bases
• chromosomes condense