Six facts about mitochondria

Mitochondria are the site of most of the stages of aerobic respiration . They are too small to be visible with the light microscope.

Mitochondria have a double membrane around them (see picture).

The inner membrane is highly folded to form structures called cristae.

The inner section is called the matrix.

Mitochondria provide energy in the form of ATP .

Cells that require a lot of energy to perform their function will have particularly high numbers of mitochondria.