Popularly known as the “Powerhouse of the cell,” mitochondria (singular: mitochondrion) are a double membrane-bound organelle found in most eukaryotic organisms. They are found INSIDE the cytoplasm and essentially functions as the cell’s “DIGESTIVE system.”Explanation:Functions of MitochondriaThe most important function of mitochondria is to produce energy through the process of oxidative phosphorylation. It is also involved in the following process:Regulates the METABOLIC ACTIVITY of the cellPromotes the growth of new cells and cell multiplicationHelps in detoxifying ammonia in the liver cellsPlays an important role in apoptosis or programmed cell deathResponsible for building certain parts of the blood and various hormones like testosterone and oestrogenHelps in maintaining an adequate concentration of CALCIUM ions within the compartments of the cellIt is also involved in various cellular activities like cellular differentiation, cell signalling, cell senescence, controlling the cell cycle and also in cell growth