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Who_GNU t1_jaasduh wrote

By that metric, you "consume" over 10 tons of hemoglobin every day.

Of course you don't have to eat 10 tons of food every day, because when you "consume" oxyhemoglobin it leaves deoxyhemoglobin, which is converted back to oxyhemoglobin, in your lungs.

ADP does the same thing, but with phosphorus instead of oxygen, temporarily becoming ATP. It's not really being consumed and recycled, it's just being reused.

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seancan44 t1_jabgskh wrote

This is the right answer. Look up the Krebs cycle

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