Why are Mitochondria Important?
Mitochondria are organelles that are present in every cell of the body except red blood cells. Probably everyone reading this learned about these little guys in high school biology, where they were described as "the energy packs of the cells."
About 20% of our body weight is mitochondria. This translates to about 250 quadrillion of these organelles. There are 37.2 trillion body cells with an average of 1 to 2000 mitochondria per cell. Sperm each have about 16 mitochondria and oocytes have 100,000 (which shows you where the power is).