Quiz 9 - e-mail KEY A Quiz 9a 1(7 pts The steps...

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e-mail KEY A Quiz 9a 11/16/05 1. (7 pts) The steps of β -oxidation of fatty acids are shown on the right. a. Write the balanced, overall equation for the rxn of a 14-carbon fatty acyl-CoA in β -oxidation. MYRISTOYL -CoA + 6CoA + 6FAD + 6NAD + + 6H 2 0 7 ACETYL -CoA + 6FADH 2 + 6 NADH + 7H + Write in the numbered step that is described: b. _ 2 __ hydration c. _ 1 ___ FADH2 forms d. _ 3_ __ NADH forms 2. (6 pts) For the following metabolic rxns, write in the letter C if it occurs in the cytosol, M if it occurs in the mitochondrial matrix, CM if both. __ M _ Pyruvate dehydrogenase complex __ M _ Citric Acid Cycle __ C _ glycoysis __ C __ fatty acid activation __ M __ electron transfer rxns __ CM _ urea cycle 3. (2 pts) Write the balanced, overall equation for the Urea Cycle. 2NH 4 + + HCO 3 - + 3ATP + H 2 O UREA + 2ADP + 4P i + AMP + H + 4. (10 pts) The Electron Transfer Chain involves Complexes I, II, III, and IV. a. At which complex does NADH in the mito matrix react? _ I __ b. At which complex does succinate from the citric acid cycle react? _ II _ c. At which complex does UQH2 react and become oxidized? _ III _ d. At which complex does O2 react? _ IV _ Write the balanced, overall equation for the rxn at Complex I. Indicate if any components change location or redox state. NADH + H + + 4H + MATRIX + UQ NAD + + 4H + CYTOSOL + UQH 2 Write the balanced, overall equation for the rxn at Complex II: Indicate if any components change location or redox state. SUCCINATE + UQ FUMARATE + UQH 2 Write the balanced, overall equation for the rxn at Complex III: Indicate if any components change location or redox state.
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