Fall 2006 - Prelim 3 - Name: _ Cornell ID#: _ Please do not...

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7 December, 2006 Name: ______________________ Cornell ID#: _________________ Please do not lift this sheet until the signal is given! You may have two and one half hours for the whole exam. There should be 13 pages in total. When available, prelim scores and final grades will be posted on the course web site. Graded exams may be picked up at the beginning of the Spring '07 semester. Watch the course web site for details. Have a great winter break! 1. _________ (18) 9. _________ (9) 2. _________ (10) 10. _________ (5) 3. _________ (14) 11 _________ (3) 4. _________ (17) 12. _________ (6) 5. _________ (5) 13. _________ (12) 6. _________ (18) 14. _________ (2) 7. _________ (10) 15. _________ (4) 8. _________ (6) 16. _________ (4) 17. _________ (3) Total _________________(146) We will continue to accept BioBM330 TA applications through Wednesday 12/13/06. The application is available via the course web page. Δ G = Δ G'° + RT ln [C][D] [A][B] Δ G'° = -RT ln K'eq R = 8.315 J mol -1 °K -1 Δ G = -nF Δ E F = 96.5 kJ V -1 mol -1 R = 1.98 cal mol -1 °K -1 T = 298° K F = 23.06 kcal V -1 mol -1
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BioBM330 third Prelim (12/7/06) Name _________________________ 2 1. In his studies of alcoholic fermentation by yeast, Louis Pasteur noted that the sudden addition of oxygen (O 2 ) to a previously anaerobic culture of fermenting grape juice resulted in a dramatic decrease in the rate of glucose consumption. This “Pasteur effect” can be counteracted by the addition of 2,4-dinitrophenol (DNP), an uncoupler of oxidative phosphorylation. a. (8 points) Use the table below to calculate the yeild of ATP from the complete oxidation of one mole of glucose ( via glycolysis, TCA cycle, and oxidative phosphorylation). Don’t write out all the relevant reactions in detail, but show some kind of skeleton outline of your thinking so that we can give partial credit. Yield of ATP Glycolysis Pyruvate Dehydrogenase TCA cycle Total yield of ATP with oxygen
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BioBM330 third Prelim (12/7/06) Name _________________________ 3 b. (4 points) Using structures , write a balanced pathway giving one intermediate and listing all relevant cofactors (using standard abbreviations) that shows the conversion of pyruvate to alcohol in yeast that occurs in the absence of oxygen. (2 points) Explain the importance of this pathway. c.
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Fall 2006 - Prelim 3 - Name: _ Cornell ID#: _ Please do not...

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