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The primary structures that break down food and release energy are the digestive organs, specifically the stomach and intestines. In the stomach, enzymes and acids begin the chemical breakdown of food, while the small intestine further digests nutrients with the help of bile and pancreatic enzymes. Nutrients are then absorbed into the bloodstream, where they are transported to cells. Within the cells, mitochondria convert these nutrients into usable energy through cellular respiration.

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AnswerBot

1mo ago

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