Exam1_Fall2009 - EXAM1Fall2009 BCHS3304,SECTION#21734,...

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EXAM 1 Fall 2009 BCHS3304, SECTION # 21734, GENERAL BIOCHEMISTRY I © 2009 Dr. Glen B Legge This is a Scantron exam. All answers should be transferred to the Scantron sheet using a #2 pencil. Write and “bubble in” your name and your PeopleSoft Student Identification Number in the appropriate area on the front of the Scantron sheet. (See Dr. Legge if you require your student ID#. If your name and ID# are not clearly legible on the Scantron sheet, you may be awarded 0 points for this exam. Write the date of the exam (092409) in the box marked SPECIAL CODES on the front side of the Scantron sheet and bubble in the appropriate circles. Turn in the Scantron sheet to the instructor before leaving. If the scantron is not received before you leave the classroom, you will receive 0 points for this Exam. Note: There are 60 questions on 14 double sided pages to this exam. Count the pages prior to beginning exam. Each question is of equal worth, with percentage score multiplied to make 200 points for this exam. At the back of the exam, there are two pages of scratch paper. You may remove the back page for scratch paper, but you must return it with the exam.
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BCHS 3304 Exam IA – page 2 I. True or False? For the following statements, select “A” if the is True or “B” if it is False . “A” “B” T F 1. The pH at which a molecule carries no net charge in solution is known as its isoelectric point p K . T F 2. Eukaryote and prokaryote cells may be distinguished from each other because the prokaryotes contain a nucleus. T F 3. Water contains one lone pair of electrons. T F 4. A micelle is comprised of molecules that are only hydrophilic. T F 5. A high p K indicates a strongly acidic group. T F 6. Condensation reactions are not freely reversible in biological systems. T F 7. In a Fischer projection, all bonds in the vertical direction project behind the plane of the paper, while the horizontal bonds come out from the plane of the paper. T F 8. A decrease in the number of particles (molecules) following a chemical reaction results in an increase in entropy. T F 9. All processes at equilibrium have a Δ H = 0. T F 10. The midpoint of a weak acid titration is where the pH = pI. T F 11. Proline is an imino acid. T F 12. The optimal range of a buffer is usually defined by ± 1 pH unit. T F 13. Natural proteins are comprised of L Amino Acids. T F 14. A negative S corresponds to a favorable change in entropy T F 15. Living organisms operate within the physical laws that apply to physics and chemistry.
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BCHS 3304 Exam IA – page 3 II. Matching A. Match the following amino acid with its correct single letter code by selecting “A-J” on your scantron sheet.
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This note was uploaded on 02/22/2011 for the course BCHS 3304 taught by Professor Johnson during the Spring '08 term at University of Houston.

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Exam1_Fall2009 - EXAM1Fall2009 BCHS3304,SECTION#21734,...

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