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AP Biology - DNA Replication: Help and Review Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. Where are hydrogen bonds located within the DNA?

Question 2 2. Why do we call DNA an antiparallel molecule?

Question 3 3. What is the cellular process in which a new copy of DNA is created?

Question 4 4. The Dispersive method of DNA Replication was disproved when the scientists observed...

Question 5 5. Because hydrogen bonds are weak bonds, they create a perfect site for _____.

Page 2

Question 6 6.

Using the given information, determine the correct order of the following events during the replication of the lagging strand.

a. The DNA double helix unwinds.

b. The Okazaki fragments are joined.

c. The RNA primase builds an RNA primer on the parent strand.

d. Nucleotides are added and matched to the parent strand.

Question 7 7. How many replication forks are contained in each replication bubble?

Question 8 8. What kind of organism was used to investigate the method of DNA Replication?

Question 9 9. How is the N-15 isotope different from the N-14 atom?

Question 10 10. Who performed the experiment that proved semi-conservative DNA replication was correct?

Page 3

Question 11 11. In which method of DNA Replication would new DNA consist of alternating parent and daughter DNA?

Question 12 12. Which of the following BEST explains the role of DNA polymerase?

Question 13 13. When DNA helicase separates the two parental strands, it creates a Y-shape called a _____.

Question 14 14. How many rounds of DNA Replication were needed to disprove the Conservative method?

Question 15 15. Why is it necessary that the DNA helicase unwinds the DNA?

Page 4

Question 16 16. Which enzyme is responsible for binding Okazaki fragments together?

Question 17 17. In which method of DNA Replication would all parent DNA be conserved in the original molecule?

Question 18 18. Why can't DNA polymerase work continuously on both parent strands?

Question 19 19. Which of the parent DNA strands is replicated discontinuously?

Question 20 20. What are the small components (monomers) that make up the large DNA polymer?

Page 5

Question 21 21. What happens to the RNA primer once DNA replication is begun by DNA polymerase?

Question 22 22. Which word part is used to designate that a molecule is an enzyme?

Question 23 23. Which is the strand that replicates just as quickly as the replication fork opens up?

Question 24 24. Which is the enzyme that attaches daughter nucleotides to the parent strand during DNA replication?

Question 25 25. What is the purpose of the RNA primer?

Page 6

Question 26 26. Which is the enzyme that builds the RNA primer?

Question 27 27. The replication of DNA is a complex process; all of the following statements are correct, EXCEPT

Question 28 28. Which enzyme is responsible for laying down the daughter nucleotides during DNA replication?

Question 29 29. The location where the process of DNA replication begins is called the _____.

Question 30 30. Why does N-15 DNA sink to a lower level than N-14 in a centrifuge tube?

AP Biology - DNA Replication: Help and Review Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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