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Nucleic Acids - DNA and RNA: 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. Why do DNA strands need to be antiparallel?

Question 2 2.

Which of the following are reasons why RNA is generally less stable than DNA?

I. Fewer hydrogen bonds

II. Prevalence of proteins that can degrade RNA

III. Fewer -OH groups in the sugar of RNA

Question 3 3. Which of the following scientists are credited with discovering the structure of DNA?

Question 4 4. How many basic types of nucleic acids exist?

Question 5 5. Which of the following statements is true?

Page 2

Question 6 6. Which of the following statements is true?

Question 7 7.

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 8 8. A nucleic acid monomer is called:

Question 9 9.

Which of the following are ways in which RNA is different than DNA:

I. Single-stranded

II. Ribose

III. Uracil

Question 10 10. Which of the following nitrogenous bases is NOT found in RNA?

Page 3

Question 11 11. Which of the following bases are categorized as purines?

Question 12 12. Which of the following forms the backbone of a DNA molecule?

Question 13 13. A phosphodiester bond links:

Question 14 14. The sugar end of the DNA strand is referred to as the _____ end and the phosphate end is referred to as the _____ end.

Question 15 15.

Which of the following is a primary function of a nucleic acid?

I. Structural support

II. Storage of information

III. Energy storage

Nucleic Acids - DNA and RNA: 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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