BIS103_09MT1 Key_

BIS103_09MT1 Key_ - BIS103-002 (Spring 2009) Midterm #1...

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BIS103-002 (Spring 2009) Midterm #1 (April 21) Name_____________________________________ 1 Instructor: Abel Student ID # ANSWER KEY Pls., check appropriate box below. This exam consists of 7 questions. A maximum of 100 points can be earned. Partial credit will be given. There are a total of 11 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 2-10. 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 Δ G = Δ G o ’ + RTln[Prod.]/[React.] Δ G o’ = – nF Δ E o’ Δ 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 4 2 26 3 12 4 16 5 8 6 14 7 20 (+2) TOTAL 100 (+2)
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BIS103-002 (Spring 2009) Midterm #1 (April 21) Name_____________________________________ 2 1. (4 pts) Warm-up question. Given below are pairs of reactants and products (note that the stoichiometry is not necessarily complete or balanced). Use your general understanding of thermodynamics, of chemical reactions and of metabolism to predict if the reactions as written ( Î ) are thermodynamically favorable (- Δ G o ’) or unfavorable (+ Δ G o ’) under standard conditions. Circle the correct answer (1 pt for each reaction). Reactants Products Standard Free Energy Change ( Δ G o ’) ADP, Pi ATP, H 2 O positive negative H 2, O 2 H 2 O positive negative PPi, H 2 O Pi, Pi positive negative Acetate, Coenzyme A Acetyl-CoA, H 2 O positive negative 2. (26 pts) Short questions on glycolysis. a) Briefly define the term substrate-level phosphorylation . (2 pts) The generation of ATP from ADP by transfer of a phosphate group from a phosphorylated substrate with a more negative free energy of hydrolysis than ATP. b) Provide the name and chemical structure of the end product for both
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BIS103_09MT1 Key_ - BIS103-002 (Spring 2009) Midterm #1...

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