Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 20, Problem 47RE
RECALL How does the yield of ATP from complete oxidation of one molecule of glucose in muscle and brain differ from that in liver, heart, and kidney? What is the underlying reason for this difference?
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Chapter 20 Solutions
Biochemistry
Ch. 20 - RECALL Briefly summarize the steps in the electron...Ch. 20 - RECALL Are electron transport and oxidative...Ch. 20 - Prob. 3RECh. 20 - REFLECT AND APPLY Show how the reactions of the...Ch. 20 - REFLECT AND APPLY How does mitochondrial structure...Ch. 20 - Prob. 6RECh. 20 - Prob. 7RECh. 20 - MATHEMATICAL Using the information in Table 20.2,...Ch. 20 - Prob. 9RECh. 20 - Prob. 10RE
Ch. 20 - MATHEMATICAL Calculate E for the following...Ch. 20 - Prob. 12RECh. 20 - MATHEMATICAL Which is more favorable...Ch. 20 - REFLECT AND APPLY Comment on the fact that the...Ch. 20 - RECALL What do cytochromes have in common with...Ch. 20 - RECALL How do the cytochromes differ from...Ch. 20 - RECALL Which of the following does not play a role...Ch. 20 - Prob. 18RECh. 20 - Prob. 19RECh. 20 - REFLECT AND APPLY Two biochemistry students are...Ch. 20 - REFLECT AND APPLY Cytochrome oxidase and...Ch. 20 - Prob. 22RECh. 20 - REFLECT AND APPLY Reflect on the evolutionary...Ch. 20 - REFLECT AND APPLY Experimental evidence strongly...Ch. 20 - Prob. 25RECh. 20 - REFLECT AND APPLY What is the advantage of having...Ch. 20 - REFLECT AND APPLY Why do the electron-transfer...Ch. 20 - Prob. 28RECh. 20 - Prob. 29RECh. 20 - Prob. 30RECh. 20 - RECALL Describe the role of the F1 portion of ATP...Ch. 20 - Prob. 32RECh. 20 - Prob. 33RECh. 20 - Prob. 34RECh. 20 - REFLECT AND APPLY What is the approximate P/O...Ch. 20 - REFLECT AND APPLY Why is it difficult to determine...Ch. 20 - REFLECT AND APPLY What are some of the...Ch. 20 - RECALL Briefly summarize the main arguments of the...Ch. 20 - Prob. 39RECh. 20 - Prob. 40RECh. 20 - Prob. 41RECh. 20 - Prob. 42RECh. 20 - REFLECT AND APPLY Criticize the following...Ch. 20 - Prob. 44RECh. 20 - Prob. 45RECh. 20 - Prob. 46RECh. 20 - RECALL How does the yield of ATP from complete...Ch. 20 - REFLECT AND APPLY The malate-aspartate shuttle...Ch. 20 - MATHEMATICAL What yield of ATP can be expected...Ch. 20 - MATHEMATICAL The free-energy change (G) for the...
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- REFLECT AND APPLY Explain how the pentose phosphate path- way can respond to a cells need for ATP, NADPH, and ribose-5- phosphate.arrow_forwardREFLECT AND APPLY The malate-aspartate shuttle yields about 2.5 moles of ATP for each mole of cytosolic NADH. Why does nature use the glycerol-phosphate shuttle, which yields only about 1.5 moles of ATP?arrow_forwardREFLECT AND APPLY Explain how glycogen phosphorylase is controlled allosterically and by covalent modification.arrow_forward
- REFLECT AND APPLY A model is proposed to explain the reaction catalyzed by an enzyme. Experimentally obtained rate data fit the model to within experimental error. Do these findings prove the model?arrow_forwardRECALL How can you recognize an enzyme that does not display MichaelisMenten kinetics?arrow_forwardREFLECT AND APPLY How does the hydrolysis of fructose-1,6-bisphosphate bring about the reversal of one of the physiologically irreversible steps of glycolysis?arrow_forward
- RECALL What is a suicide substrate? Why are they important?arrow_forwardREFLECT AND APPLY Does the net gain of ATP in glycolysis differ when glycogen, rather than glucose, is the starting material? If so, what is the change?arrow_forwardRECALL Which of the following are spontaneous processes? Explain your answer for each process. (a) The hydrolysis of ATP to ADP and Pi Pi (b) The oxidation of glucose to CO2 and H2O by an organism (c) The phosphorylation of ADP to ATP (d) The production of glucose and O2 from CO2 and H2O in photosynthesisarrow_forward
- REFLECT AND APPLY Why does the degradation of palmitic acid (see Question 12) to eight molecules of acetyl-CoA require seven, rather than eight, rounds of the -oxidation process?arrow_forwardREFLECT AND APPLY Comment on the fact that the reduction of pyruvate to lactate, catalyzed by lactate dehydrogenase, is strongly exergonic (recall this from Chapter 15), even though the standard free-energy change for the half reaction Pyruvate+2H++2eLactate is positive (G=36.2kJmol1=8.8kcalmol1), indicating an endergonic reaction.arrow_forwardREFLECT AND APPLY Suggest a reason why heating a solution containing an enzyme markedly decreases its activity. Why is the decrease of activity frequently much less when the solution contains high concentrations of the substrate?arrow_forward
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