1. Yeast have mitochondria and can perform cellular respiration. What would you expectto be consumed and produced during the process of cellular respiration in yeast?a. Glucose and O2 consumed; CO2, H2O, and energy produced.b. Glucose, H2O, CO2, and energy consumed; O2 produced.c. CO2 and H2O consumed; glucose, O2, and energy produced.d. CO2 and energy consumed; H2O, O2, and energy produced.2. Q3.2. In which way do cells use glucose during the production of ATP?a. Cells incorporate some of the atoms from glucose molecules into ATP molecules.b. Cells convert glucose molecules entirely into energy, which is then stored in ATP.c. Cells transfer some of the energy stored in glucose’s chemical bonds to ATP.d. Cells directly combine glucose with O2 in the ETC to produce energy for ATP.3. Recall that in cellular respiration, the processes of glycolysis, pyruvate processing, andthe citric acid cycle precede the electron transport chain. What is produced by thesethree prior processes that is used by the electron transport chain? (Hint: Click here tosee an overview of the major processes in cellular respiration.)a. Each of the three processes produce ATP, which carries potential energy to the ETC.b. Each of the three processes produce protons that the ETC pumps into theintermembrane space.c. Each of the three processes produce NADH, which carries potential energy to theETC.d. Each of the three processes produce FADH2, which carries potential energy to theETC.4. Complex I transfers electrons to Q (coenzyme Q) in one of the reactions in the electrontransport chain. Which molecule is reduced and which is oxidized in this reaction?a. Complex I is reduced because it loses electrons and Q is oxidized because it gainselectrons.b. Complex I is oxidized because it loses electrons and Q is reduced because it gainselectrons.c. Complex I is reduced because it gains electrons and Q is oxidized because it loseselectrons.d. Complex I and Q are both oxidized because electrons are moved from one moleculeto the other.5. Which of the following does NOT store potential energy that is usable by a cell?a. ATPb. Protons pumped into the intermembrane spacec. NADHd. CO26. Some students have the misconception that during cellular respiration, the matter inglucose is somehow turned into energy. Consider that when we exercise, we burnglucose and also lose mass. Why does this happen?a. Our cells use up the potential energy stored in glucose, and losing that energy duringexercise reduces our mass.b. Our cells convert the mass in glucose into energy, which is weightless.c. Our cells convert the mass in glucose into energy that is used during exercise. Losingthat energy reduces our mass.d. Our cells convert glucose into CO2 and water, which are eliminated from our bodieswhen we exercise.7. Which of the following would INCREASE the number of ATP molecules generated perNADH molecule in the electron transport chain?a. Reversing the direction of proton pumping by Complex Ib. Reducing the number of protons required by ATP synthase to produce an ATPmoleculec. Having NADH transfer its electrons to Complex III instead of Complex Id. Reducing the amount of oxygen available to the cell8. The antibiotic antimycin A causes electrons to become stuck to Q, so that they areunable to ever reach Complex IV. Which of the following scenarios you explored in thistutorial is MOST SIMILAR to the effects of antimycin A?a. Lack of oxygen (electrons don’t leave the ETC)b. Presence of DNP (protons leak through the membrane)c. Starvation (lack of glucose)d. Intense exercise (high ATP utilization)9. For which of the following is potential energy INCREASING? (Hint: Click here to see anoverview of the ETC.)a. Protons moving from the mitochondrial matrix to the intermembrane spaceb. Electrons moving from Complex IV to O2c. Protons moving from the intermembrane space to the mitochondrial matrixd. Electrons moving from Complex III to Complex IV10. What would happen to you, metabolically, if all your mitochondria were destroyed?a. You would have much less ATP available to think, move muscles, etc.b. You would have many fewer electrons available to think, move muscles, etc.c. You would have much less oxygen available to think, move muscles, etc.d. You would have much less glucose available to think, move muscles, etc.
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