Calculate total number of ATP molecules produced from one molecule of maltose. You will need to consider that first maltose will hydrolyze, then resulting glucose molecules will enter into glycolysis where ATP along with NADH molecules will be produced. Then resulting molecules of pyruvate enter into citric acid cycle and go all the way down to oxidative phosphorylation. Also remember that you use ATP molecules as well in glycolysis so subtract them in the calculations.

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