- Mitochondrion provides energy to cells using oxygen and glucose
- A mitochondrion is a kind of cellular organelle
- Therefore, mitochondrion is the cellular organelle that provides energy to cells using oxygen and glucose

Hence, mitochondrion is the cellular organelle that provides energy to cells using oxygen and glucose
[Question]An athlete is running a race. The athlete's body needs energy. Which organelle(s) in the athlete's cells supply the energy for cellular functions?
[Context]- Mitochondrion provides energy to cells using oxygen and glucose 
- A mitochondrion is a kind of cellular organelle