Multiple ChoiceWhich one of the following enzymes catalyzes the addition of water to the C=C bond in fumarate?33views
Multiple ChoiceHow many final high-energy molecules are produced in phase C of the citric acid cycle?20views
Multiple ChoiceWrite the name for the substrate, enzyme, and product of reaction 6 of the citric acid cycle.33views
Multiple ChoiceWrite the name of the substrate and the enzyme of reaction 8 of the citric acid cycle.27views
Multiple ChoiceWhat is the name of the enzyme for the reaction that produces a GTP molecule in the citric acid cycle?20views
Multiple ChoiceComplete the following net equation for one turn of the citric acid cycle.Acetyl CoA + __H2O + 3 NAD+ + FAD + GDP + ____ ⭢ CoA + ___NADH + ___H+ + FADH2 + GTP + ___CO237views
Textbook QuestionLook ahead to Figure 21.8 for the citric acid cycle.a. Draw the structures of the reactants in steps 3, 6, and 8, and indicate which hydrogen atoms are removed in these reactions.43views
Textbook QuestionWhy, do you suppose, the coenzyme for the reaction in the citric acid cycle that is catalyzed by succinate dehydrogenase is FAD and not NAD⁺?59views
Textbook QuestionIdentify the participants in the citric acid cycle that contain alcohol groups. Identify these groups as primary, secondary, or tertiary alcohols.69views
Textbook QuestionWhich of the reactants in the citric acid cycle have two chiral carbon atoms?49views
Textbook QuestionSince no molecular oxygen participates in the citric acid cycle, the steps in which acetyl groups are oxidized to CO₂ involve removal of hydride ions and hydrogen ions. What is the acceptor of hydride ions? What is the acceptor of hydrogen ions?40views
Textbook QuestionWhat is the final fate of the carbons in acetyl-CoA after several turns of the citric acid cycle?72views
Textbook QuestionLook at the eight steps of the citric acid cycle (Figure 21.8) and answer the following questions:a. Which steps involve oxidation reactions?39views
Textbook QuestionLook at the eight steps of the citric acid cycle (Figure 21.8) and answer the following questions:b. Which steps involve decarboxylation (loss of CO₂)?32views
Textbook QuestionLook at the eight steps of the citric acid cycle (Figure 21.8) and answer the following questions:c. Which step or steps involve a hydration reaction?36views
Textbook QuestionLook ahead to Figure 21.8 for the citric acid cycle.b. What class of enzymes carry out these reactions?49views
Textbook QuestionWe talk of burning food in a combustion process, producing CO₂ and H₂O from food and O₂. Explain how O₂ is involved in the process although no O₂ is directly involved in the citric acid cycle.98views
Textbook QuestionThe citric acid cycle contains four 4-carbon dicarboxylic acids.a. Name them.46views
Textbook QuestionThe citric acid cycle contains four 4-carbon dicarboxylic acids.b. Arrange them in order from least oxidized to most oxidized.24views
Textbook QuestionHow many NADH and how many FADH2 molecules are formed in the citric acid cycle?53views
Textbook QuestionWhat would happen to the citric acid cycle if NADH and FADH₂ were not reoxidized?54views
Textbook QuestionIdentify the reaction(s) of the citric acid cycle that involve(s)a. oxidation and decarboxylation53views
Textbook QuestionIdentify the reaction(s) of the citric acid cycle that involve(s)c. hydration113views
Textbook QuestionWhat is the total NADH and total FADH₂ produced in one turn of the citric acid cycle?88views
Textbook QuestionRefer to the diagram of the citric acid cycle in Figure 18.13 to answer each of the following:b. How is the number of carbon atoms decreased?43views
Textbook QuestionRefer to the diagram of the citric acid cycle in Figure 18.13 to answer each of the following:d. What are the decarboxylation reactions?43views
Textbook QuestionRefer to the diagram of the citric acid cycle in Figure 18.13 to answer each of the following:b. What are the four-carbon compounds?41views
Textbook QuestionRefer to the diagram of the citric acid cycle in Figure 18.13 to answer each of the following:d. In which reactions are secondary alcohols oxidized?34views
Textbook QuestionIf there are no reactions in the citric acid cycle that use oxygen, O₂, why does the cycle operate only in aerobic conditions? (18.5)40views
Textbook Question Match the following ATP yields to reactions a to g: (18.4, 18.5, 18.6) 1.5 ATP 2.5 ATP 7 ATP 10 ATP 12 ATP 32 ATP 36 ATP d. Acetyl CoA goes through one turn of the citric acid cycle.38views
Textbook QuestionWhich of the following molecules will produce the most ATP per mole? (18.5, 18.6)e. α-ketoglutarate or fumarate in one turn of the citric acid cycle 31views
Textbook QuestionName the reactions in the citric acid cycle that involve oxidative decarboxylation.34views
Textbook QuestionRefer to the diagram of the citric acid cycle in Figure 12.11 to answer each of the following:d. Name the reactions where secondary alcohols are oxidized to ketones.27views
Textbook QuestionRefer to the diagram of the citric acid cycle in Figure 12.11 to answer each of the following:c. Name the reaction that is coupled to GTP formation.29views