Glencoe Biology Chapter 12: Molecular Genetics 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!

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Question 1 1. What happens to the RNA primer once DNA replication is begun by DNA polymerase?

Question 2 2. All of the following statements are correct, EXCEPT:

Question 3 3. What causes DNA mutations and how do they happen?

Question 4 4. Why can't DNA polymerase work continuously on both parent strands?

Question 5 5. Which of the following scientists are credited with discovering the structure of DNA?

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Question 6 6. Which part of the lac operon codes for the lactose digesting enzymes?

Question 7 7. Before an mRNA molecule is finished with RNA processing, what is it called?

Question 8 8. Which type of mutagen actually changes the chemical structure of certain nucleotides, causing them to mispair?

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

Question 10 10. Because hydrogen bonds are weak bonds, they create a perfect site for _____.

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Question 11 11.

The following concepts led to the hypothesis that DNA has a double helix structure:

I. The ratio of A:T is 1:1.

II. The ratio of G:C is 2:1

III. DNA strands are antiparallel

Question 12 12. Who performed the experiment that proved semi-conservative DNA replication was correct?

Question 13 13. Why does N-15 DNA sink to a lower level than N-14 in a centrifuge tube?

Question 14 14. How many replication forks are contained in each replication bubble?

Question 15 15. What is the cellular process in which a new copy of DNA is created?

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Question 16 16. The replication of DNA is a complex process; all of the following statements are correct, EXCEPT

Question 17 17. Which of the following BEST explains the role of DNA polymerase?

Question 18 18. Which is the strand that serves as the template for transcription?

Question 19 19. Which is the enzyme that builds the RNA primer?

Question 20 20. Which of the following is the process of decoding RNA as instructions for building an amino acid chain?

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Question 21 21. Why is it necessary that the DNA helicase unwinds the DNA?

Question 22 22. Based on the original sequence, ACTTGAC, which of the following answer choices includes a transition mutation?

Question 23 23. What kind of organism was used to investigate the method of DNA Replication?

Question 24 24. In which method of DNA Replication would all parent DNA be conserved in the original molecule?

Question 25 25. In which phase of transcription does the RNA polymerase attach to the promoter sequence of DNA?

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Question 26 26. What are the small components (monomers) that make up the large DNA polymer?

Question 27 27. Which of the following is the process of transferring genetic information from DNA to RNA?

Question 28 28. Which parts of a gene were originally thought of as 'junk DNA'?

Question 29 29. Where in the cell does transcription occur?

Question 30 30. Which of the following describes an increase in gene expression?

Glencoe Biology Chapter 12: Molecular Genetics 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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