thermodynamics: We never lose or gain energy. Just change form and location.
* 3 stages of extracting energy from food:
* Digestion, absorption, and transportation.
* Breaks food down (Simple sugars, fatty acids, monoglycerides)
* System transports these nutrients to tissue throughout the body
* Breakdown of many small molecules to a few key metabolites.
* Inside cells, chemical reactions convert simple sugars, fatty acids, glycerol, and amino acids into a few…
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