Mitochondria
Mitochondria are indispensable organelles central to cellular energy metabolism, primarily generating ATP through oxidative phosphorylation. Beyond energy production, they regulate apoptosis, calcium homeostasis, and key metabolic pathways (e.g., the Krebs cycle). Consequently, mitochondrial dysfunction is implicated in neurodegenerative disorders, metabolic diseases, and aging, underscoring their pivotal role in maintaining cellular homeostasis and overall physiological health.