BIS103_05MT1 Key_

BIS103_05MT1 Key_ - BIS103-001(Spring 2005 Midterm#1(April...

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BIS103-001 (Spring 2005) Midterm #1 (April 21) Name________________ANSWER KEY_______ 1 Instructor: Abel Student ID #_______________________________ 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 12 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 2-8. 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 G = G o ’ + RTln[Prod.]/[React.] 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 5 2 16 3 17 4 14 5 12 6 14 7 22 TOTAL 100
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BIS103-001 (Spring 2005) Midterm #1 (April 21) Name________________ANSWER KEY_______ 2 1. (5 pts) Given below are pairs of reactants and products (the stoichiometry is not necessarily complete or balanced). Use your general understanding of thermodynamics, chemical reactions and metabolism to predict if the reactions as written ( Î ) are thermodynamically favorable (- G o ’) or unfavorable (+ G o ’) under standard conditions. Circle the correct answer (1 pt for each reaction). Reactants Products Standard Free Energy Change ( G o ’) CO 2 , H 2 O Glucose, O 2 positive negative H 2, O 2 H 2 O positive negative ADP AMP, Pi positive negative Glucose 2x Pyruvate positive negative Glucose, Pi Glucose-6-P positive negative 2. (16 pts) The enzyme pyruvate kinase catalyzes the last step in glycolysis: Phosphoenolpyruvate (PEP) + ADP Î Pyruvate (Pyr) + ATP a) Draw the structures of PEP and Pyr in the boxes given below (6 pts). PEP
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BIS103_05MT1 Key_ - BIS103-001(Spring 2005 Midterm#1(April...

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