This article describes an organelle, a cell component with its own distinctive structure and function. In eukaryotic cells, this is bounded by its own membrane, which is a lipid bilayer made of phospholipid.
Mitochondrion (plural mitochondria) is an organelle found in eukaryotic cells whose primary function is to carry out aerobic respiration, i.e., convert energy from a relatively more hard-to-use form (pyruvates) to energy stored in the form of ATP.
|Type of organisms whose cells contain mitochondria||eukaryotic cells only, both plant cells and animal cells|
|Type of cells within the organisms that contain mitochondria||All (?) cells|
|Number of mitochondria per cell||1 to 1000s, depending on the energy needs of the cell|
|Size||per mitochondrion. In some cells, it could take up to 1/5 of the cell volume|
|Location within cell||?|
|Structural components||mitochondrial outer membrane, intermembrane space, mitochondrial inner membrane, cristae, mitochondrial matrix|
|Chemical constituents||lots of proteins|
|Control of the entry and exit of materials||Membranes (hydrophilic/hydrophobic issues), the TIM/TOM complex|
|Function||aerobic respiration, i.e., ATP synthesis|
Control of cell cycle
|Evolutionary origin||endosymbiotic theory of mitochondrial origin|