Molecular oxygen is used most directly by many living organisms in a process that involves the transfer of potential energy from glucose to ATP.
Cellular respiration is the process by which living organisms obtain energy (ATP) by breaking down food molecules in their cells.
The chemical equation for the reaction is as follows:
C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP
According to this equation, molecular oxygen (O2) is used to oxidize glucose molecules and transfer its stored (potential) energy to ATP.
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