Mitichondria source from interent
Mitochondria are small, often between 0.75 and 3 micrometers and are not visible under the microscope unless they are stained.
Unlike other organelles (miniature organs within the cell), they have two membranes, an outer one and an inner one. Each membrane has different functions.
Mitochondria are split into different compartments or regions, each of which carries out distinct roles.