The 3 Stages of Catabolism: How food is converted to energy?
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The 3 Stages of Catabolism: How food is converted to energy?
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概要
Metabolism involves a structured three-stage breakdown of nutrients to provide the body with energy. The initial phase takes place in the digestive tract, where complex foods like proteins and fats are reduced to their basic building blocks before entering the blood. During the second stage, these smaller units travel into cells to be processed within the cytoplasm and mitochondria, creating high-energy molecules through pathways like glycolysis and the TCA cycle. The final phase occurs deep inside the mitochondrial membrane, focusing on converting those molecules into ATP. This essential end product serves as the primary fuel source for all cellular activities. By following this sequence, the body efficiently transforms dietary intake into usable biological power.