How Your Body Uses Oxygen: Cellular Respiration Explained
Cellular respiration converts glucose and oxygen into ATP, the cell’s energy currency.
C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + ATP (energy)
- O₂ is inhaled, diffuses in alveoli, binds hemoglobin, and is transported to cells.
- In mitochondria, O₂ serves as the final electron acceptor in oxidative phosphorylation.
- CO₂ produced is transported to the lungs and exhaled.
This elegant process powers every cellular function, from muscle contraction to nerve signaling.
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