33. In bacterial cells, a) glucose-6-phosphate; ATP b) ADP; phosphoenolpyruvate c) fructose-2,6-bisphosphate; fructose-6-phosphate d) Ca2+; glyceraldehyde-3-phosphate 34. What is the name for the process that produces glucose-6-phosphate in glycolysis? a) substrate-level phosphorylation b) oxidative phosphorylation is an activator of phosphofructokinase while c) autophosphorylation d) glycolytic phosphorylation 35. Which of the following can happen when a photosynthetic pigment absorbs light? a) energy lost as heat b) energy given off by fluorescence c) exciton transfer d) photooxidation e) all of the above 36. In the electron transport chain, electrons are passed from redox center to redox center a) spontaneously because of the redox potential gradient b) in an ATP dependent fashion c) because of the addition of free energy d) because of the proton gradient 37. Which of the following occurs during cyclic electron flow? a) photosystem I absorbs light but not photosystem II b) protons are pumped into the lumen by cytochrome bef c) there is no production of NADPH or oxygen d) all of the above is an inhibitor. 38. Why is photosystem I unable to oxidize water? a) it cannot transfer protons to the stroma b) it contains proteins that prevent oxygen from binding to it c) its reduction potential is exactly equal to that of oxygen d) it is not a strong enough oxidizing agent forin