Exam 7: Cellular Respiration and Fermentation

The synthesis of ATP by oxidative phosphorylation, using the energy released by movement of protons across the membrane down their electrochemical gradient, is an example of

Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the electron transport chain?

Brown fat cells produce a protein called thermogenin in their mitochondrial inner membrane. Thermogenin is a channel for facilitated transport of protons across the membrane. What will occur in the brown fat cells when they produce thermogenin?

The direct energy source that drives ATP synthesis during respiratory oxidative phosphorylation in eukaryotic cells is

Which of the following statements about NAD+ is true?

Which metabolic pathway generates a proton gradient?

Figure 7.1 -If pyruvate oxidation is blocked, what will happen to the levels of oxaloacetate and citrate in the citric acid cycle shown in Figure 7.1?

Which statement best supports the hypothesis that glycolysis is an ancient metabolic pathway that originated before the last universal common ancestor of life on Earth?

The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is

In a mitochondrion, if the matrix ATP concentration is high and the intermembrane space proton concentration is too low to generate sufficient proton-motive force, then

In animal cells, glycolysis occurs in the

During glycolysis, when each molecule of glucose is catabolized to two molecules of pyruvate, most of the potential energy contained in glucose is

What is the proton-motive force?

If a cell is able to synthesize 30 ATP molecules for each molecule of glucose completely oxidized to carbon dioxide and water, approximately how many ATP molecules can the cell synthesize for each molecule of pyruvate completely oxidized to carbon dioxide and water?

The primary role of oxygen in cellular respiration is to

The complete oxidation of glucose in aerobic respiration occurs through which of the following sequence of metabolic reactions?

For each molecule of glucose consumed in glycolysis, there is a net consumption of which of the following?

How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate?

What is the purpose of beta oxidation in respiration?

Which of the following indicates a primary path by which electrons travel downhill energetically during aerobic respiration?