The cells with the greatest number of mitochondria are fat and muscle cells. The breakdown of adenosine triphosphate, or ATP, which is located in the mitochondria, supplies these cells with an abundance of energy so that they can perform their many duties.
Cells are the essential building blocks of all living organisms and occur in a variety of forms, sizes, and shapes. In the majority of multicellular creatures, cells are compartmentalised into structures known as organelles that perform highly specialised functions. These organelles include the plasma membranes, cytoplasm, nuclei, Golgi complexes, channels or pores, endoplasmic reticula, ribosomes, chloroplasts, vesicles, peroxisomes, vacuoles, cell walls, centrioles, lysosomes, cytoskeletons and mitochondria. Mitochondria, considered the “powerhouses” or “energy factories” of the cell, are found in both animal and plant cells.
The human body is constituted of over 200 types of cells. The majority of these cells are alive, although the cells in the hair, nails, and certain tooth and bone structures are nonliving. On average, animal cells contain between 1,000 and 2,000 mitochondria.
The synthesis of energy in the form of ATP molecules takes place in the mitochondria. Through a sequence of metabolic events known as respiration, these high-energy molecules are produced. Because mitochondria are utilised to store surplus energy, fat cells present in fatty tissues contain an abundance of them. In addition to containing an abundance of mitochondria, muscle cells, which are responsible for body movement, also contain a large number of mitochondria.