* Mitochondria are the powerhouse of the cell: They are the primary sites of ATP (adenosine triphosphate) production, which is the energy currency of cells.
* Cellular respiration occurs in mitochondria: The key processes of cellular respiration, including the Krebs cycle and electron transport chain, take place within the mitochondria.
* Muscle cells have high energy demands: Muscle cells are highly active and require a lot of energy to function. They have a particularly high density of mitochondria to meet this demand.
While other organelles play roles in cellular function, isolating them wouldn't be as relevant for studying the process of cellular respiration specifically.
