Copyright

The Nucleotide Structure of DNA & RNA 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.

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 2 2. The 'central dogma' of molecular biology states that

Question 3 3. How does RNA differ from DNA?

Question 4 4. A phosphodiester bond links:

Question 5 5. Which of the following is tRNA's job?

Page 2

Question 6 6. The nitrogenous bases (and the two strands of the DNA double helix) are held together by

Question 7 7. Which of the following bases are categorized as purines?

Question 8 8. The sugar end of the DNA strand is referred to as the _____ end and the phosphate end is referred to as the _____ end.

Question 9 9. Which of the following statements is true?

Question 10 10.

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

I. Structural support

II. Storage of information

III. Energy storage

Page 3

Question 11 11. Refer to the following diagram of DNA complementary base pairing below. Which of the following bases would pair (from top to bottom) with the exposed 3' end strand?

Question 12 12. Watson and Crick's model allowed them to visualize what?

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

Question 14 14. When tRNA is carrying an amino acid, we call it ______.

Question 15 15. A nucleic acid monomer is called:

Page 4

Question 16 16. Why do DNA strands need to be antiparallel?

Question 17 17. How many basic types of nucleic acids exist?

Question 18 18. What is an anticodon?

Question 19 19. The link between mRNA and a protein is

Question 20 20. Which of the following statements is true?

Page 5

Question 21 21. Which of the following statements about tRNA and mRNA is correct?

Question 22 22. DNA consists of four different nitrogenous bases, which are:

Question 23 23. A major difference between DNA and RNA is?

Question 24 24. Griffith's experiments showing the transformation of Rough strain pneumococcus bacteria to Smooth strain pneumococcus bacteria in the presence of heat-killed Smooth strain bacteria provided evidence that

Question 25 25. The codons UAU and UAC both code for the amino acid Tyrosine. This can be explained by the _____ of the genetic code.

Page 6

Question 26 26. The antiparallel relationship of the two strands of DNA refers to the

Question 27 27. Which of these statements isn't true?

Question 28 28. What does DNA stand for?

Question 29 29. Information sources used by Watson and Crick to determine the structure of DNA included

Question 30 30. Which of the following forms the backbone of a DNA molecule?

The Nucleotide Structure of DNA & RNA 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!

Biology 101: Intro to Biology  /  Science Courses
Support