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Multiple Choice
Which process produces the most ATP per molecule of glucose?
A
Glycolysis
B
Oxidative Phosphorylation
C
Citric Acid Cycle
D
Fermentation
Verified step by step guidance
1
Understand the context: ATP (adenosine triphosphate) is the energy currency of the cell, and different metabolic pathways produce varying amounts of ATP from glucose.
Identify the processes: Glycolysis, Citric Acid Cycle, Fermentation, and Oxidative Phosphorylation are the key processes involved in cellular respiration.
Glycolysis: This process occurs in the cytoplasm and breaks down one molecule of glucose into two molecules of pyruvate, producing a net gain of 2 ATP molecules.
Citric Acid Cycle: Also known as the Krebs cycle, it takes place in the mitochondria and generates 2 ATP molecules per glucose molecule through substrate-level phosphorylation.
Oxidative Phosphorylation: This process occurs in the inner mitochondrial membrane and involves the electron transport chain and chemiosmosis, producing approximately 26-28 ATP molecules per glucose molecule, making it the most ATP-productive process.