Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 28, Problem 28.71P
Interpretation Introduction
Interpretation:
Whether lactate is a dead-end product of a
Concept Introduction:
- Lactate has been considered as the dead-end product of glycolysis for a very long time. Recent research, however, have proved such assumption to be wrong.
- Lactate is important in regeneration of NAD+, so that glycolysis can continue to occur.
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1- Find the amount of energy released (in kcal) by:
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Which of the following substances can be considered as metabolic intermediates?
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Describeenergy consumed vs released in reactions. Differentiate between endergonic vs exergonic reactions, anabolism vs catabolism, and coupled reactions.
Chapter 28 Solutions
Introduction to General, Organic and Biochemistry
Ch. 28.7 - Prob. 28.1PCh. 28 - What are the products of lipase-catalyzed...Ch. 28 - What is the main use of amino acids in the body?Ch. 28 - Prob. 28.4PCh. 28 - Prob. 28.5PCh. 28 - Prob. 28.6PCh. 28 - Prob. 28.7PCh. 28 - Prob. 28.8PCh. 28 - Prob. 28.9PCh. 28 - Prob. 28.10P
Ch. 28 - Prob. 28.11PCh. 28 - Prob. 28.12PCh. 28 - Prob. 28.13PCh. 28 - Prob. 28.14PCh. 28 - Prob. 28.15PCh. 28 - Prob. 28.16PCh. 28 - Prob. 28.17PCh. 28 - Prob. 28.18PCh. 28 - Prob. 28.19PCh. 28 - Prob. 28.20PCh. 28 - Two enzymes participating in ß-oxidation have the...Ch. 28 - Prob. 28.22PCh. 28 - Prob. 28.23PCh. 28 - Is the ß -oxidation of fatty acid (without the...Ch. 28 - Calculate the number of ATP molecules obtained in...Ch. 28 - Prob. 28.26PCh. 28 - Prob. 28.27PCh. 28 - Prob. 28.28PCh. 28 - Prob. 28.29PCh. 28 - Prob. 28.30PCh. 28 - Prob. 28.31PCh. 28 - Prob. 28.32PCh. 28 - Prob. 28.33PCh. 28 - Ammonia, NH3, and ammonium ion, NH+4are both...Ch. 28 - Prob. 28.35PCh. 28 - Prob. 28.36PCh. 28 - Prob. 28.37PCh. 28 - Prob. 28.38PCh. 28 - 28-39 The metabolism of the carbon skeleton of...Ch. 28 - Prob. 28.40PCh. 28 - Prob. 28.41PCh. 28 - Prob. 28.42PCh. 28 - Prob. 28.43PCh. 28 - Prob. 28.44PCh. 28 - Prob. 28.45PCh. 28 - Prob. 28.46PCh. 28 - Prob. 28.47PCh. 28 - Prob. 28.48PCh. 28 - Prob. 28.49PCh. 28 - Prob. 28.50PCh. 28 - Prob. 28.51PCh. 28 - Prob. 28.52PCh. 28 - Prob. 28.53PCh. 28 - Prob. 28.54PCh. 28 - Prob. 28.55PCh. 28 - Prob. 28.56PCh. 28 - Prob. 28.57PCh. 28 - Write the products of the transamination reaction...Ch. 28 - Prob. 28.59PCh. 28 - Prob. 28.60PCh. 28 - Prob. 28.61PCh. 28 - Prob. 28.62PCh. 28 - Prob. 28.63PCh. 28 - Prob. 28.64PCh. 28 - Prob. 28.65PCh. 28 - Prob. 28.66PCh. 28 - Prob. 28.67PCh. 28 - Prob. 28.68PCh. 28 - Prob. 28.69PCh. 28 - Prob. 28.70PCh. 28 - Prob. 28.71PCh. 28 - Prob. 28.72PCh. 28 - Prob. 28.73PCh. 28 - Prob. 28.74PCh. 28 - Prob. 28.75PCh. 28 - Prob. 28.76PCh. 28 - Prob. 28.77PCh. 28 - Prob. 28.78PCh. 28 - Prob. 28.79PCh. 28 - Many soft drinks contain citric acid to add...Ch. 28 - Prob. 28.81PCh. 28 - One occasionally hears diet advice that proteins...Ch. 28 - Prob. 28.83PCh. 28 - Prob. 28.84P
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- The first step of the metabolic process known as glycolysis is the conversion of glucose to glucose- 6-phosphate. This process has a positive value for rG' Glucose + Pi Glucose-6-phosphate + H2O rG' = +13.8 kJ/mol-rxn This reaction is coupled to the hydrolysis of ATP ATP + H2O ADP + Pi rG' = -30.5 kJ/mol-rxn What is the sum of these two equations and the value of rG' for the coupled reaction? Is the coupled reaction product-favored at equilibrium?arrow_forwardWhich, by name, of the four general stages of the process by which biochemical energy is obtained from food are part of the common metabolic pathway.arrow_forwardWould you describe metabolic pathways inherently wasteful or inherently economical and why?arrow_forward
- For a given acid HA, it was determined that at pH 6.0 the concentration of the conjugate base [A] was 0.075 M and the acid [HA] was 0.025 M. What percent of this acid is ionized at pH 6.0? What is the pKa of this acid? What pH would this acid be 50% lonized?arrow_forwardThe average adult consumes approximately 11,700 kJ per day. Assuming that the metabolic pathways leading to ATP synthesis operate at 50% thermodynamic efficiency, about 5850 kJ ends up in the form of synthesized ATP. The average adult consumes approximately 11,700 kJ per day. Assuming that the metabolic pathways leading to ATP synthesis operate at 50% thermodynamic efficiency, about 5850 kJ ends up in the form of synthesized ATP. Imagine that creatine phosphate, rather than ATP, is the universal energy carrier molecule in the human body. Assume that the cellular concentrations of creatine phosphate, creatine, and phosphate are 21.7 mM, 2.17×10-3 mM, and 6.30 mM, respectively. Calculate the weight of creatine phosphate that would need to be consumed each day by a typical adult human if creatine phosphate could not be recycled. Estimate the free energy of hyrdolysis of creatine phosphate under cellular conditions to determine how many moles are required. Use the standard…arrow_forwardIn the electron transport chain, the hydrogen ions enter the inner compartment of mitochondria through special channels formed by A. ATP synthase. B. coenzyme A. C. acetyl CoA. D. oxygen.arrow_forward
- Oxidation of one molecule of glucose yields more molecules of ATP than the oxidation of one molecule of lauric acid. Is it true or falsearrow_forwardUse the following information corresponding to 1 Molar concentrations of reactants and products for Questions 7 -13. ΔHo’ = -63.39 kJ/mol and ΔS o’ = -0.1255 kJ/molK. Glycerol + ATP → ADP + 3-Phosphoglycerate: ΔHo’ = -63.39 kJ/mol and ΔS o’ = -0.1255 kJ/molK. At what temperature (if any) is this reaction excergonic? Report your answer in Kelvin using inequality signs with out and extra spaces added in. For example T=100.00K T>100.00K T<100.00K T</=100.00K less than or equal to T>/=100.00K greater than or equal toarrow_forwardRigor mortis, the stiffening of muscles. after death is due to the depletion of intracellular ATP. Provide the biochemical basis of rigor mortisarrow_forward
- Which of the following are thought to be possible explanations for apparent contradictions in the energy balance as it relates to weight loss and the thermodynamic laws? O self reported energy intake and expenditures. O the assumption that weight loss is based on carbohydrates decreases only. O metabolic efficency D over time as weight loss occurs there will be increases in resting energy expenditure.arrow_forwardWhat compound is produced during strenuous exercise, when the muscles are depleted of oxygen? pyruvate carbon dioxide lactate ethanol NADPHarrow_forwardGive an account of the total ATP yield when I molecule of glucose is converted to carbon dioxide and water?arrow_forward
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