Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 22, Problem 20P
Interpretation Introduction
Interpretation:
Using the graph in Deeper Look box, the timing of the provision of energy from different metabolic sources during heavy exercises should be explained.
Concept Introduction:
During rest and normal activities, 80 to 90 % energy is contributed by fats, 5 to 18 % from carbohydrates and 2 to 5 % from protein. In exercise, there are total four main endogenous sources of the energy: intramuscular triacylglycerols, glycogen (muscle carbohydrate stores), blood fatty acids, and blood sugar.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Calculate the total ATP produced by the complete oxidation of a triglyceride composed of three palmitic acids in the liver. Be sure to indicate the specific steps involved and their corresponding ATP (or ATP equivalent).
1. a) Calculate the approximate net yield of ATP during the aerobic conversion of 2 glycerol to 1 glucose. Show work
Efficiency of ATP Production in Muscle: The transformation of glucose to lactate in myocytes releases only about 7% of the free energy released when glucose is completely oxidized to CO2 and H2O. Does this mean that anaerobic glycolysis in muscle is a wasteful use of glucose? Explain.
Chapter 22 Solutions
Biochemistry
Ch. 22 - Prob. 1PCh. 22 - Prob. 2PCh. 22 - Prob. 3PCh. 22 - Prob. 4PCh. 22 - Prob. 5PCh. 22 - Prob. 6PCh. 22 - Prob. 7PCh. 22 - Prob. 8PCh. 22 - Prob. 9PCh. 22 - Understanding Enzyme Mechanisms Related to...
Ch. 22 - Understanding the Mechanisms of Reactions Related...Ch. 22 - Prob. 12PCh. 22 - Prob. 13PCh. 22 - Prob. 14PCh. 22 - Prob. 15PCh. 22 - Prob. 16PCh. 22 - Prob. 17PCh. 22 - Prob. 18PCh. 22 - Prob. 19PCh. 22 - Prob. 20PCh. 22 - Prob. 21PCh. 22 - Prob. 22PCh. 22 - Using the ActiveModel for aldose reductase,...
Knowledge Booster
Similar questions
- (a) Differentiate TWO (2) spontaneous and nonspontaneous processes in our body metabolism with a suitable exaumple.arrow_forwardBriefly explain why fat oxidation improves with aerobic training. How would this affect a persons cross-over point?arrow_forwardShow sequentially, the total ATP Yield and the net ATP Yield in the complete oxidation of Glucose (from Glycolysis to Oxidative Phosphorylation) in the Muscle and Heart Tissues of a man. Indicate the differences in the ATP yield in both tissues.arrow_forward
- The Cori Cycle. Before vigorous exercise (at rest) the level of blood lactate is at its normal level (about 25 mM). During a 400 m sprint, the value rises sharply in less than a few minutes to about 200 mM and then declines slowly to around 40 mM over 60 mins after the sprint. a. Discuss (or illustrate) the pathway and reactions that cause the rapid increase in lactate concentration during the sprint. b. What causes the slow decline in lactate concentration after the sprint? Why does the decrease occur more slowly than the rapid increase? c. What enzymatic reaction is responsible for maintaining the lactate concentration above zero at recovery after the sprint?arrow_forwardActivity of Salivary Amylase: 1. Is there a difference in the time to dissolve the small and larger biscuit/cracker? Explain. 2. Explain your observations with the banana and egg.arrow_forwardCalculate the number of ATPs generated by the complete metabolic oxidation of tripalmitin (tripalmitoylglycerol). Hydrolysis of the triacylglycerol occurs at the cell surface. Consider the energy yield from catabolism of glycerol, as well as from the fatty acids. Calculate the ATP yield per carbon atom oxidized, and compare it with the energy yield from glucose.arrow_forward
- Activity of pesin in the blood at pH 7.4arrow_forwardEffects of Changing Metabolite Concentrations on Glycolysis In an erythrocyte undergoing glycolysis what would be the effect of a sudden increase in the concentration of a. AΤP? b. AMP? c. fructose-1.6-bisphosphate? d. fructose-2, 6-bisphosphate? e. citrate? f. glucose-6-phospthate?arrow_forwardUnderstanding the Oxidation of Glucose and Its Products in the TCA Cycle Glycolysis, the pyruvate dehydrogenase reaction, and the TCA cycle result in complete oxidation of a molecule of glucose to CO2. Review the calculation of oxidation numbers for individual atoms in any molecule, and then calculate the oxidation numbers of the carbons of glucose, pyruvate, the acetyl carbons of acetyl-CoA. and the metabolites of the TCA cycle to convince yourself that complete oxidation of glucose involves removal of 24 electrons and that each acetyl-CoA through the TCA cycle gives up 8 electrons.arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningNutritional Sciences: From Fundamentals to Food, ...Health & NutritionISBN:9781337486415Author:McGuirePublisher:Cengage
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Nutritional Sciences: From Fundamentals to Food, ...
Health & Nutrition
ISBN:9781337486415
Author:McGuire
Publisher:Cengage