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I'm pretty sure the answer is 285Kcal.

686Kcal is the possible energy yield of a glucose molecule. 263Kcal is the energy available to a cell as a result of cellular respiration usually (36 ATP molecules); cellular respiration is about 39% efficient.

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13y ago

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How many calories are released when 1 gram of protein is completely broken down in the presence of oxygen?

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