DNA Structure, Replication, & Cell Cycle

The enzyme that unwinds the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase

order of replication

• 3, 4, 2, 1
• 3, 1, 4, 2
• 2, 1, 4, 3
• 3, 4, 1, 2

Tags

NGSS.HS-LS3-2

Which enzyme is responsible for adding nucleotides?

• Topoisomerase
• DNA Polymerase
• Ligase
• Primase

The process of DNA replication is called semi conservative because it results in

• none of these
• Two DNA molecules.  One original molecule and one with two new strands
• two exact copies with new strands
• two identical molecules, each with 1 original strand and one new.

Based on the diagram, how many origins of replication are represented?

• 1
• 2
• 3
• 4

Based on the diagram, the enzyme (represented in gray) is most likely...

• DNA polymerase
• DNA Ligase
• Nuclease
• Helicase

Tags

NGSS.HS-LS1-1

If a strand reads:
3' A A A T T T C 5'
The matching strand would read...

• 5' T T T A A A G 3'
• 3' T T T A A A G 5'
• 5' A A A T T T C 3'
• 3' U U U A A A G 5'

Tags

NGSS.HS-LS1-1

After analyzing a sample of DNA, a scientist recorded the data shown in the table. What percentage of the DNA sample is cytosine?

• 22%
• 25%
• 28%
• 56%

Tags

NGSS.HS-LS3-3

Name this structure

• double helix
• nucelotide
• twisted ladder
• hydrogen bond

Tags

NGSS.HS-LS1-1

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

Tags

NGSS.HS-LS1-1