DNA REPLICATION

Which enzyme is responsible for adding nucleotides?

• Topoisomerase
• DNA Polymerase
• Ligase
• Primase

In what phase of the cell cycle does DNA replication take place?

• G1
• S
• G2
• M

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 units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

Which sequence of DNA bases would pair with this partial strand
CAT TCA CTG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

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

• enzyme

• unzip

• A replication fork

DNA polymerase moves in the _________ to ____________ direction

• 3' to 5'

• easiest

• 5" to 3"

• 9 to 5

The fragments on the lagging strand that are made up of repeating segments of DNA and RNA Primers

• okazaki fragments

• Primase

• Polymerase

• unused DNA

Enzyme that breaks hydrogen bonds (unzips)

• Ligase

• Polymerase

• Primase

• Helicase

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

• 1
• 2
• 3
• 4