Bio 311CExam 2 – October 23, 2007 – Brief Key and Distribution of Scores1. B6. C11. B16. C21. E26. Cholesterol present, 2. DE 7. C12. D17. E22. Cshorter hydrocarbon chains3. D8. D13. A18. B23. Eunsaturated chains4. C9. B14. E19. A24. C5. E10. D15. A 20. B25. D27. under cellular respiration column: glucose or fats; ATP; make ATP; oxidizedunder photosynthesis column: light; sugars or G3P; make sugars; reduced28. (a) B, C, E; (b) A only; (c) A29. here are two examples:A. how: has flexible weak bonds for transport; phosphorylation; why: to push substrate against gradientB. how: weak bonds flexible shape for tight binding; why: to be specific, to stress bonds in substrate30. see diagram at right; (c) B31. here are some possible steps: H atom in pyruvate; H atom in NADH; H atom to lactate in fermentation; pyruvate to acetyl; acetyl + 4C to 6C enter Krebs Cycle; on NADH out of Krebs; on FADH2 out of Krebs; NADH to ETC and oxidized; FADH2to ETC and oxidized; electrons through ETC in redox
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