DNA Replication AP Bio Unit 6

What is the direction of DNA synthesis?

• 3' to 3'

• 5' to 5'

• 3' to 5'

• 5' to 3'

Which enzyme is responsible for unwinding the DNA helix?

• DNA helicase

• DNA polymerase

• DNA ligase

• Primase

What are the short fragments on the lagging strand called?

• Helicase fragments

• Okazaki fragments

• Leading fragments

• DNA ligase

Which enzyme synthesizes RNA primers?

• Topoisomerase

• Primase

• DNA polymerase III

• DNA ligase

What is the role of DNA polymerase I in DNA replication?

• Removing RNA primers and replacing them with DNA

• Joining Okazaki fragments

• Synthesizing RNA primers

• Unwinding the DNA helix

How many origins of replication do eukaryotes like humans have?

• None

• Multiple

• Two

• One

What is the nature of DNA replication?

• Semi-conservative

• Non-conservative

• Conservative

• Dispersive

Which enzyme is responsible for relieving the tension in the DNA helix ahead of the replication fork?

• Topoisomerase

• Primase

• DNA polymerase

• DNA helicase

What is required for DNA polymerase to start DNA synthesis?

• A ribosome

• An RNA primer

• A DNA template

• A DNA primer

Which enzyme is responsible for adding nucleotides to the growing DNA strand?

• DNA ligase

• Primase

• DNA polymerase

• DNA helicase