Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 9.4CC
How can glucose be oxidized in the absence of oxygen? How is the energy of this oxidation conserved?
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How does the yield of ATP from complete oxidation of onemolecule of glucose in muscle and brain differ from that in liver,heart, and kidney? What is the underlying reason for this difference?
How many acetyl CoA molecules are produced in one cycle of beta oxidation?
How many cycles would it take to catabolize a stearic acid molecule (a fatty acid, [18:0]) into acetyl Co A units?
a)How many acetyl CoA molecules would be produced?
b) How many reduced nucleotides would be produced?
c) If a molecule of glucose produces a net 32 ATP when completely catabolized, which do you think will produce more energy, one molecule of glucose or one molecule of stearic acid? Justify your answer.
How many turns of the citric acid cycle are implicated in accounting for the net oxidation of one (1) mole of fructose to carbon dioxide and water?
Chapter 9 Solutions
Becker's World of the Cell (9th Edition)
Ch. 9 - How are catabolic and anabolic pathways similar?...Ch. 9 - Prob. 9.2CCCh. 9 - Why do oxidation and reduction reactions always...Ch. 9 - How can glucose be oxidized in the absence of...Ch. 9 - In the absence of oxygen, why is it necessary to...Ch. 9 - Prob. 9.6CCCh. 9 - Prob. 1QCh. 9 - Why dont glycolysis (glucose to pyruvate) and...Ch. 9 - Why are the key regulatory enzymes in glycolysis...Ch. 9 - Why do cancer cells carry out high rates of...
Ch. 9 - High-Energy Bonds. When first introduced by Fritz...Ch. 9 - The History of Glycolysis. Following are several...Ch. 9 - Glycolysis in 25 Words or Fewer. Complete each of...Ch. 9 - Energetics of Carbohydrate Utilization. The...Ch. 9 - QUANTITATIVE Glucose Phosphorylation. The direct...Ch. 9 - Ethanol Intoxication and Methanol Toxicity. The...Ch. 9 - Propionate Fermentation. Although lactate and...Ch. 9 - QUANTITATIVE Glycolysis and Gluconeogenesis. As...Ch. 9 - Prob. 9.9PSCh. 9 - Youve Got Some Explaining to Do. Explain each of...Ch. 9 - Arsenate Poisoning. Arsenate (HAsO42) is a potent...Ch. 9 - Life Without Phosphofructokinase. Many bacteria do...Ch. 9 - Prob. 9.13PS
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- Which citric acid cycle intermediates can be directly used in gluconeogenesis? Which can be used for fatty acid synthesis? Which can be directly converted to amino acids?arrow_forwardWhy is the isomerization of glucose-6-phosphate (G6P) to fructose-6-phosphate (F6P) an important step in glycolysis? How is the isomerization of F6P back into G6P prevented?arrow_forwardPleasearrow_forward
- What step in the citric acid cycle is inhibited by fluoroacetate treatment?arrow_forwardWhat amino acids yield citric acid cycle components and glycolysis intermediates when deaminated?arrow_forwardWhat is the metabolic advantage in the conversion of glucose to lactate, in which there is no net oxidation or reduction?arrow_forward
- How many molecules of ATP are obtained from the β-oxidation of one molecule of a 16-carbon saturated fatty acyl-CoA?arrow_forwarda) What is the reason for the non-oxidative phase of the pentose phosphate pathway?b) Which compound is converted into which compound in the step where sequential dehydration and hydration reactions occur in the citric acid cycle?c) Why is ammonia released in some tissues carried by binding to other molecules in the blood? Where is it transmitted in the body for its destruction? What molecule is it transferred onto there? So what molecule does it make?arrow_forwardHow are fats metabolized and primed to enter the Kreb's cycle? What is the ATP yield of metabolizing fat (more or less compared to carbohydrate)?arrow_forward
- How is succinate dehydrogenase unique compared with the other enzymes in the citric acid cycle?arrow_forwardWhat is the ATP yield from the oxidation of one molecule of nervonic acid?arrow_forwardWhat is the final fate of the carbons in acetyl-CoA after several turns of the citric acid cycle?arrow_forward
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