The process by which energy is released from glucose is known as cellular respiration. During this metabolic process, glucose (C₆H₁₂O₆) is oxidized to produce carbon dioxide (CO₂), water (H₂O), and ATP, the energy currency of cells. Cellular respiration primarily occurs in the mitochondria of eukaryotic cells and involves several stages, including glycolysis, the Krebs cycle, and the electron transport chain. This energy-releasing process is vital for fueling cellular activities.