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29. Which metabolic pathway is common to both "fermentation' and 'cellular respiration? A the Krebs (citric acid or TCA) cycle B. the electron transport system C. glycolysis D. synthesis of acetyl CoA from pyruvate E. reduction of pyruvate to lactate 30. The oxygen consumed during cellular resplration Is Involved directly in which process or event? A glycolysis B. accepting electrons at the end of the electron transport chaln Cthe Kreb's cycle D. the oxidation of pyruvate to acetylcoA. E, the phosphorylation of ADP to form ATP 31. The breakdown of fats generates which Intermediate molecule used in cellular respiration? a glucose b. pyruvate c. acetyl-CoA d. 3-glycerophosphate 1 32. When electrons flow along the electron transport chalns of mitochondria, which of the following changes occurs? A the concentration of protons in the matrix decreases B. ATP synthase pumps protons by active transport C the electrons galn free energy D. the cytochromes phosphorylate ADP to form ATP E NAD. Is oxidized 33. Transferring a phosphate group from one molecule to ADP to yield ATP is the definition of: A oxidative phosphorylation 8. fermentation C photophosphorylation D. substrate level phosphorylation E. anaerobic respiration 34. What is the significance of the conversion of pyruvic acid to lactic acid during fermentation? A pyruvic acld becomes avallable to enter the citric add Cycle B. NADH Is generated C. NAD" Is generated D. ATP is produced E. acetyl-CoA is formed