Split reins are a piece of equipment used for communicating with a horse while it is being ridden. Split reins are actually two separate, individual reins that are used together, with one rein on each side of the horse's neck.
As discussed above, mitochondria are the sites of respiration, and generate chemical energy in the form of ATP by metabolizing sugars, fats, and other chemical fuels with the assistance of molecular oxygen.
Functions of Mitochondria. The most prominent function of mitochondria is to produce energy to the cell in the form of ATP through oxidative respiration process. It also regulates the metabolic activity of the cell.