Biochem Exam1 - 99:110 Exam 1 Test Form A February 9 2007 To answer questions 1-4 use the terms to the right and fill in the correct letter on your

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99:110 Exam 1 Test Form A February 9, 2007 To answer questions 1-4, use the terms to the right and fill in the correct letter on your answer sheet. Terms may be used more than once or not at all. Questions 1-4 are worth 1 point each. 1. The uneven distribution of charges on a glucose molecule makes it ___ h ____. 2. In a diagram of free energy versus reaction progress, the point of highest energy during the reaction is known as the ___ i _____. 3. Keratin intermediate filaments contain the secondary structure called ___ a _____. 4. The ___ b _____ is stabilized by hydrogen bonding between adjacent strands of the polypeptide. a) α helix b) β sheet c) allosteric d) amino acid e) hydrophobic f) Ligase g) NMR h) polar i) Transition state j) X-ray (diffraction) Questions 5-36. Each of these questions is worth 3 points. 5. Nucleic acids perform the following functions: a. take part in biosynthesis and store energy b. store energy and act as a membrane c. take part in biosynthesis and encode information d. none of the above e. all of the above Which of the following statements is true? a. Buffers work best for a pH that is within 3 units of the pK of the buffer. b. Buffers can be prepared using the Henderson-Hasselbalch equation. c. A buffer requires a combination of a weak acid and its conjugate base. d. A and B e. B and C 7. Which of the following processes are part of gene expression? a. replication of DNA to make a copy b. DNA transcribed to RNA c. RNA translated to make protein d. A and B e. B and C The height of the activation barrier determines: a. the free energy change of the reaction b. the rate of the reaction c. the probability that the reaction will be spontaneous d. A and C e. A, B, and C Which of the following can carry “cargo”? a. keratin b. tubulin c. kinesin d. B and C 1
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99:110 Exam 1 Test Form A February 9, 2007 e. A, B, and C 10. What factor(s) limit(s) the conformation of the protein backbone? a. double-bond character of the C-N bond b. steric strain of oxygen atoms c. hydrogen–bonding interactions d. A and B e. A, B, and C 11. Entropy increases when a. Water freezes b. Dry ice sublimes c. Sodium chloride dissolves in water d. Several types of lipid molecules assemble to form a membrane
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This note was uploaded on 04/12/2008 for the course BIOCHEM 099:100 taught by Professor Fulton during the Spring '07 term at University of Iowa.

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Biochem Exam1 - 99:110 Exam 1 Test Form A February 9 2007 To answer questions 1-4 use the terms to the right and fill in the correct letter on your

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