Question

what stage of cell respiration makes the majority of atp? multiple choice fermentation electron transport chain pyruvate oxidation glycolysis

Explanation:

• Fermentation produces a small amount of ATP (2 per glucose) and is an anaerobic process, not the main ATP - producing stage of cellular respiration.
• The electron transport chain (ETC) in oxidative phosphorylation is the stage where the majority of ATP is produced during cellular respiration. It uses the proton gradient generated to produce around 26 - 28 ATP per glucose molecule.
• Pyruvate oxidation produces acetyl - CoA and a small amount of NADH (which will later contribute to ATP production in ETC), but it does not directly produce a large amount of ATP.
• Glycolysis produces a net of 2 ATP per glucose molecule, which is much less than the amount produced in the ETC.

Answer:

B. electron transport chain (assuming the second option is labeled as B; if the original options had different labels, adjust accordingly. Based on the given options, the correct one is "electron transport chain")