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Biochem Exam 2
Biochem Exam 2
17
Biology
Graduate
04/27/2010

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Term
The citric acid cycle is amphibolic, meaning...
Definition
it plays a role in both anabolism and catabolism.
Term
Which enzymes in the citric acid cycle catalyze oxidative decarboxylation reactions...
Definition
isocitrate dehydrogenase and the alpha-ketoglutarate dehydrogenase complex.
Term
In which cellular location do the majority of the reactions of the citric acid cycle take place...
Definition
the mitochondrial matrix.
Term
The immediate electron acceptor for the majority of the oxidative reactions of the citric acid cycle is...
Definition
NAD
Term
Which of the following is not a reaction occurring during oxidative decarboxylation of pyruvate...
Definition
oxidation of an acetate group.
Term
What coenzyme is not associated with the alpha-ketoglutarate dehydrogenase complex...
Definition
biotin.
Term
The synthesis of ATP is driven by a proton gradient (pH gradient)..TRUE/FALSE
Definition
TRUE
Term
The ultimate electron acceptor in the electron transport chain is
Definition
oxygen
Term
Complex IV of the electron transport chain oxidizes _____, reduces ____, and ____ protons in the process.
Definition
cytochrome c; oxygen; pumps
Term
Complex II of the electron transport chain oxidizes ___, reduces ____, and ___ protons in the process.
Definition
FADH2; coenzyme Q; doesn't pump
Term
Complex I of the electron transport chain oxidizes ___, reduces ___, and ___, protons in the process.
Definition
NADH; coenzyme Q; pumps
Term
Complex III of the electron transport chain oxidizes ___, reduces ___, and ___, protons in the process.
Definition
coenzyme Q; cytochrome c; pumps
Term
The final reduced product of the electron transport chain is...
Definition
water
Term
What is not a part of the electron transport chain...
Definition
coenzyme A
Term
Which complex of the electron transport chain does not contain an iron-sulfur cluster...
Definition
Complex IV
Term
What is not true of the process of oxidative phosphorylation?
Definition
iron-sulfur proteins bind to the ATP synthase
Term
Which complex does not directly contribute to the production of ATP by pumping protons...
Definition
Complex II
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