Why is it difficult to determine an exact number for P/O ratios?
Answer to relevant QuestionsReflect and apply What are some of the difficulties in determining the exact number of protons pumped across the inner mitochondrial membrane by the respiratory complexes? What yield of ATP can be expected from complete oxidation of each of the following substrates by the reactions of glycolysis, the citric acid cycle, and oxidative phosphorylation? (a) Fructose-1,6-bisphosphate (b) ...Calculate the net ATP yield from the complete processing of a saturated fatty acid containing 17 carbons. Consider the b-oxidation steps, processing of acetyl-CoA through the citric acid cycle, and electron transport. In fatty-acid synthesis, malonyl-CoA, rather than acetyl-CoA, is used as a “condensing group.” Suggest a reason for this. Antimycin A (an inhibitor of electron transport) is an inhibitor of photosynthesis in chloroplasts. Why is this likely to be so?
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