Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
8th Edition
ISBN: 9780134015187
Author: John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher: PEARSON
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Textbook Question
Chapter 24, Problem 24.11UKC

Oxygen is not a reactant in the β oxidation of fatty acids. Can β oxidation occur under anaerobic conditions? Explain.

Expert Solution & Answer
Check Mark
Interpretation Introduction

Interpretation:

Whether βoxidation occur under anaerobic conditions or not has to be explained.

Concept introduction:

Fatty acids are aliphatic mono-carboxylic acids that are mostly obtained from the hydrolysis of natural fats and oils. They have a general formula R(CH2)nCOOH, n is mostly an even number of carbon atoms (4 to 20) with a few exceptions that have an odd number.

β-oxidation is the oxidation and splitting of two carbon units at β- carbon atom. This results in sequential removal of 2 carbon fragments as acetyl CoA until the complete oxidation of fatty acids.

Electron transport chain is the final common pathway in aerobic cells by which electrons and hydrogen (NADH and FADH2) derived from foodstuffs are transferred to oxygen to form water and finally produce ATP (energy).

Answer to Problem 24.11UKC

Oxygen is needed to reoxidize reduced coenzymes, formed in β-oxidation, that enter the electron transportation. Therefore, β-oxidation cannot occur under anaerobic condition.

Explanation of Solution

Main points related to βoxidation can be listed as follows,

βoxidationSiteMitochodrialmatrixActivatedbyGlucagonLowbloodglucoseInitialsubstrateFattyacidCoenzymesFAD,NAD+FunctionCleavestwocarbonacylgroupFinalproductAcetylCoAunits

Since oxygen is not a reactant in βoxidation of fatty acids but it is needed to reoxidize reduced coenzymes, formed in β-oxidation, that enter the electron transportation.

Therefore, β-oxidation cannot occur under anaerobic condition.

Conclusion

β-oxidation cannot occur under anaerobic condition.

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Chapter 24 Solutions

Fundamentals of General, Organic, and Biological Chemistry (8th Edition)

Ch. 24.6 - Prob. 24.8PCh. 24.6 - Prob. 24.9PCh. 24.7 - Prob. 24.4CIAPCh. 24.7 - Prob. 24.5CIAPCh. 24.7 - Prob. 24.6CIAPCh. 24.7 - What is atherosclerosis?Ch. 24.7 - Prob. 24.8CIAPCh. 24 - Oxygen is not a reactant in the oxidation of...Ch. 24 - Prob. 24.12UKCCh. 24 - Prob. 24.13UKCCh. 24 - Prob. 24.14UKCCh. 24 - Prob. 24.15UKCCh. 24 - Prob. 24.16UKCCh. 24 - Prob. 24.17UKCCh. 24 - Prob. 24.18UKCCh. 24 - Prob. 24.19APCh. 24 - Prob. 24.20APCh. 24 - Prob. 24.21APCh. 24 - Prob. 24.22APCh. 24 - Prob. 24.23APCh. 24 - Prob. 24.24APCh. 24 - Prob. 24.25APCh. 24 - Prob. 24.26APCh. 24 - Prob. 24.27APCh. 24 - Prob. 24.28APCh. 24 - Prob. 24.29APCh. 24 - Prob. 24.30APCh. 24 - Prob. 24.33APCh. 24 - Prob. 24.34APCh. 24 - Prob. 24.35APCh. 24 - Prob. 24.36APCh. 24 - Prob. 24.37APCh. 24 - Prob. 24.38APCh. 24 - Prob. 24.39APCh. 24 - Prob. 24.40APCh. 24 - Prob. 24.41APCh. 24 - Prob. 24.42APCh. 24 - Prob. 24.43APCh. 24 - Prob. 24.44APCh. 24 - Prob. 24.45APCh. 24 - Prob. 24.46APCh. 24 - Prob. 24.47APCh. 24 - Prob. 24.48APCh. 24 - Prob. 24.49APCh. 24 - Prob. 24.50APCh. 24 - Prob. 24.51APCh. 24 - Prob. 24.52APCh. 24 - Prob. 24.53APCh. 24 - Individuals suffering from ketoacidosis have...Ch. 24 - Prob. 24.55APCh. 24 - Prob. 24.56APCh. 24 - Prob. 24.57APCh. 24 - Prob. 24.58APCh. 24 - Why are fatty acids generally composed of an even...Ch. 24 - Prob. 24.60APCh. 24 - Prob. 24.62APCh. 24 - Prob. 24.63APCh. 24 - Prob. 24.64CPCh. 24 - Prob. 24.66CPCh. 24 - Prob. 24.67CPCh. 24 - Prob. 24.68CPCh. 24 - Prob. 24.70GPCh. 24 - In the synthesis of cholesterol, acetyl-CoA is...Ch. 24 - Prob. 24.72GP
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