AP Biology Practice

Seals the Okazaki fragments together

• DNA Polymerase
• ligase
• helicase
• primase

Enzyme that unwinds the DNA

• ligase
• DNA Polymerase
• primase
• helicase

Adds nucleotides to the newly synthesized strand of DNA

• DNA polymerase I
• DNA polymerase III
• Primase
• Ligase

removes the RNA primer and adds DNA nucleotides to fill in the gap

• DNA polymerase III
• ligase
• primase
• DNA polymerase I

direction new nucleotides are synthesized on the new strand

• 5^' to 3' (new nucleotides added to the 3' end)
• 3' to 5' (new nucleotides added to the 5' end)

Experiment that radioactively labeled the proteins and DNA of bacteriophages to determine if DNA or protein was the transforming agent

• Avery
• Watson & Crick
• Messelson & Stahl
• Hershey & Chase

repetitive sequences of DNA on the ends of chromosomes (TTAGGG)

• telomeres
• telomerase
• Okazaki fragments
• primer

Which shows the correct base-pairing rules?

• A-C, G-T
• A-T, G-C
• C-T, G-A
• A-C, T-C

Which of the following is not one of the structures that make up DNA?

• mitochondria
• Nitrogen-containing base
• sugar
• phosphate

DNA is made up of a long chain of___

• amino acids
• proteins
• nucleotides
• carbohydrates