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Which Pathway Produces the Most ATP per Glucose Molecule?

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Adenosine Triphosphate (ATP)

Adenosine 5'-triphosphate (ATP) is a nucleotide that is used to supply energy within cells.

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Question: Which Pathway Produces the Most ATP per Glucose Molecule?

It's important know how many ATP are produced per glucose molecule by various metabolic pathways, such as the Krebs cycle, fermentation, glycolysis, electron transport and chemiosmosis. Here is a look at how many net ATP are produced per pathway and which yields the most ATP per glucose.

Answer: Here is the breakdown of net ATP production:

Glycolysis: 2 ATP
Krebs Cycle: 2 ATP
Oxidative Phosphorylation (Electron Transport Chain/Chemiosmosis): 28 ATP
Fermentation: 2 ATP

So, oxidative phosphorylation is the metabolic cycle that produces the most net ATP per glucose molecule.

 

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