BIS103_09Final Key_

BIS103_09Final Key_ - BIS103-001 (Spring 2009) Final Exam...

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BIS103-001 (Spring 2009) Final Exam (June 6) Name_____________________________________ 1 Instructor: Abel Student ID #_______ ANSWER KEY __________ Pls., check appropriate box below. This exam consists of 5 questions. A maximum of 100 points can be earned. Partial credit will be given. There are a total of 13 pages, including the cover page and one blank sheet at the end for notes. However, do not use the blank sheet for your final answers. If you need more space, use the back of pages 2-12. Write your name on top of each page! Petitions for regarding will be considered only if you have used permanent ink , unless an addition error has occurred. *IT IS YOUR RESPONSIBILITY TO WRITE LEGIBLE! No extra effort will be made to decipher your handwriting. T = 25 o C (298 K) T = 37 o C (310 K) R = 8.315 J mol -1 K -1 F = 96.5 kJ mol -1 V -1 n = moles of electrons Z = charge of proton ! G = ! G o ’ + RTln[Prod.]/[React.] ! G = ! G o ’ + 2.303RT ! pH + ZF !# ! G o’ = – nF ! E o’ ! E o’ = E o’ Oxidant – E o’ Reductant I,_______________________________________, authorize the University to distribute publicly this graded exam (e.g., handed out in class or left in a bin for pick up). I am aware of the fact that violations of the Academic Code of Conduct 1 may be reported to UC Davis Student Judicial Affairs. 1 Examples of academic misconduct include: receiving or providing unauthorized assistance on examinations, using unauthorized materials during an examination, altering an exam and submitting it for re-grading, or using false excuses to obtain extensions of time ( http://sja.ucdavis.edu/cac.htm ). Signature________________________________________ Date____________________________ Undergraduate Student Completing Incomplete Open Enrollment Student Graduate Student Question Value Score 1 26 2 24 3 12 4 16 5 22 + 3 TOTAL 100 + 3
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BIS103-001 (Spring 2009) Final Exam (June 6) Name_____________________________________ 2 1. (26 pts) Questions related to fatty acid metabolism. a) The citrate shuttle, which can be viewed as an indirect transporter of acetyl groups, provides the acetyl-CoA units required for fatty acid biosynthesis. What is the cost of this transport process in ATP equivalents per acetyl group? (2 pt) ATP per acetyl group: ___ 1 ATP _____ b) Acetyl-CoA is the precursor in fatty acid biosynthesis. However, for most of the reactions, acetyl- CoA needs to be further activated by a biotin-dependent enzyme before it can be used by the fatty acid synthase complex. Write the balanced reaction of acetyl-CoA activation and give the enzyme name. (4 pts) Reaction: Acetyl-CoA + HCO 3- + ATP ! Malonyl-CoA + ADP + Pi Enzyme: Acetyl-CoA Carboxylase c) The synthesis of fatty acids and their breakdown by $ -oxidation occurs by separate pathways. Compare the two pathways in animals by filling the blanks below. (7 pts)
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This note was uploaded on 10/20/2009 for the course BIS 103 taught by Professor Abel during the Spring '08 term at UC Davis.

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BIS103_09Final Key_ - BIS103-001 (Spring 2009) Final Exam...

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