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34. Which temperature and pH profile curves on the graphs were most likely generated from analysis of an enzyme from a human stomach where conditions are strongly acid? A) curves 1 and 4 B) curves 1 and 5 C) curves 2 and 4 D) curves 2 and 5 35. Following glycolysis and the citric acid cycle, but before the electron transport chain and oxidative phosphorylation, the carbon skeleton of glucose has been broken down to CO2 with some net gain of ATP. Most of the energy from the original glucose molecule at that point in the process, however, is in the form of ______. A) acetyl-CoA B) glucose C) pyruvate D) NADH The following questions are based on the reaction A + B ? C + D shown in the accompanying figure. 36. Which of the following terms best describes the forward reaction in the figure? A) endergonic, ?G > 0 B) exergonic, ?G < 0 C) endergonic, ?G < 0 D) exergonic, ?G > 0 37. Which of the following represents the activation energy required for the enzyme-catalyzed reaction in the figure? A) a B) b C) c D) d D) curves 3 and 4 38. Where are the proteins of the electron transport chain located? A) mitochondrial outer membrane B) mitochondrial inner membrane C) mitochondrial intermembrane space

          34. Which temperature and pH profile curves on the graphs were most likely generated from analysis of an enzyme from a human stomach where conditions are strongly acid?
A) curves 1 and 4
B) curves 1 and 5
C) curves 2 and 4
D) curves 2 and 5

35. Following glycolysis and the citric acid cycle, but before the electron transport chain and oxidative phosphorylation, the carbon skeleton of glucose has been broken down to CO2 with some net gain of ATP. Most of the energy from the original glucose molecule at that point in the process, however, is in the form of ______.
A) acetyl-CoA
B) glucose
C) pyruvate
D) NADH

The following questions are based on the reaction A + B ? C + D shown in the accompanying figure.

36. Which of the following terms best describes the forward reaction in the figure?
A) endergonic, ?G > 0
B) exergonic, ?G < 0
C) endergonic, ?G < 0
D) exergonic, ?G > 0

37. Which of the following represents the activation energy required for the enzyme-catalyzed reaction in the figure?
A) a
B) b
C) c
D) d
D) curves 3 and 4

38. Where are the proteins of the electron transport chain located?
A) mitochondrial outer membrane
B) mitochondrial inner membrane
C) mitochondrial intermembrane space

Added by Zachary T.

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