Lehninger Principles of Biochemistry Nelson | CoX viap MHE/Freeman presented by

Question

Lehninger Principles of Biochemistry Nelson | CoX viap MHE/Freeman presented by Sapling Learning SEVENTH EDITION hile eukaryotic cells can use both glucose (C6H206) and hexanoic acid (C6H1402) as fuel sources for cellular respiration, hexanoic acid yields more energy per gram when completely oxidized to CO2 and H2O. Select the reasons why hexanoic acid releases more energy upon complete combustion to Co2 and H20 Since hexanoic acid is more oxidized than glucose, complete oxidation of hexanoic acid generates more reducing equivalents that can enter the respiratory chain Complete oxidation of hexanoic acid generates more reducing equivalents that can enter the respiratory chain than the complete oxidation of glucose Hexanoic acid is directly broken down into two molecules of acetyl-CoA. However, glucose is first broken down into two molecules of pyruvate, and then converted to acetyl-CoA, thus requiring more energy than the degradation of hexanoic acid. Glucose is more reduced than hexanoic acid, thus complete combustion of glucose requires more energy than the complete combustion of hexanoic acid. Hexanoic acid is more hydrogen rich than glucose, thus hexanoic acid is more reduced tharn glucose.

Explanation / Answer

hexanoic acid is more hydrogen rich than glucose , thus hexanoic acid is more reduced than glucose

The difference between glucose and hexanoic acid is that hexanoic acid has a higher Hydrogen per Carbon content than glucose. Because of the high Hydrogen per Carbon content, Hexanoic Acid produces more energy than Glucose when it goes through cellular respiration.

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