That energy particle is called ATP, or adenosine triphosphate. ATP is the fuel that powers every function inside the cell. When oxygen and nutrients are properly delivered and processed, the body can generate up to 38 ATP molecules from a single fuel source. With adequate ATP, the cell has energy to live and do its job. It can produce milk, enzymes, hormones, or perform whatever specialized function it was designed to carry out. Energy production is not optional—it is the foundation of cellular

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