Process occurs in mitochondrion

The mitochondrion is primarily responsible for cellular respiration, a process that converts nutrients into adenosine triphosphate (ATP), the energy currency of the cell. This involves glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation, which collectively generate ATP by utilizing glucose and oxygen. Additionally, mitochondria play a role in regulating metabolic pathways, apoptosis (programmed cell death), and calcium homeostasis. Overall, they are crucial for energy production and cellular function.