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Michigan Merit Exam: Basics of DNA 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. Which of the following statements is true?

Question 2 2. Based on the original sequence, ACTTGAC, which of the following answer choices includes a transition mutation?

Question 3 3. Which type of mutation results in an incomplete polypeptide because of an early stop signal?

Question 4 4. How can base analogs cause mutations?

Question 5 5. What kind of mutation causes sickle-cell anemia?

Page 2

Question 6 6. Which of these statements about pyrimidine dimers is TRUE?

Question 7 7. How would a shift in the reading frame likely alter the resulting protein?

Question 8 8. Mutagens are typically found _____.

Question 9 9. A shift in the reading frame is usually caused by an insertion or a

Question 10 10. What does DNA stand for?

Page 3

Question 11 11. Why do people try to protect their skin from ultraviolet radiation?

Question 12 12. Which enzyme checks DNA for errors?

Question 13 13. Which of the following scientists are credited with discovering the structure of DNA?

Question 14 14. Which type of mutagen is most likely to cause frameshift mutations?

Question 15 15. DNA consists of four different nitrogenous bases, which are:

Page 4

Question 16 16. The best term to describe the incorporation of a random mistake into the DNA sequence at a specific point is _____.

Question 17 17. When can a genetic mutation get passed down through successive generations?

Question 18 18. Which type of mutations can result in a frameshift?

Question 19 19. The eleventh amino acid of protein X should be serine, however due to a mutation it now has the amino acid alanine in that position. Which type of mutation could have caused this change?

Question 20 20. Which type of mutagen actually changes the chemical structure of certain nucleotides, causing them to mispair?

Page 5

Question 21 21. How does a frameshift mutation in the gene coding for the enzyme, hexosaminidase A, result in Tay-Sachs disease?

Question 22 22. A mutation in DNA can affect the amino acid sequence because it affects the code found in _____.

Question 23 23. Which type of mutagen could be compared to an extra plate shoving itself into the middle of a stack of plates?

Question 24 24. Tay-Sachs disease results from a buildup of harmful chemicals in the

Question 25 25. _____ mutations result in a longer DNA strand.

Page 6

Question 26 26.

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 27 27. Which type of mutation does NOT change the overall function of the protein?

Question 28 28. Which of these best describes the differences between ionizing and non-ionizing radiation?

Question 29 29. How do mutagens cause mutations?

Question 30 30. Which type of radiation causes pyrimidine dimers?

Michigan Merit Exam: Basics of DNA 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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