index label resource url accession description 1 Mitochondria omit http://purl.obolibrary.org/obo/OMIT_0009978 OMIT_0009978 - 2 mitochondrion plana http://purl.obolibrary.org/obo/PLANA_0007512 PLANA_0007512 A spherical to rod shaped organelle that generates the majority of a cell's supply of ATP via cellular respiration. Mitochondria have their own genome and consist of outer and inner membranes, the latter folds inward to form cristae. This folding increases the surface area of the membrane and thus increases the space available to produce ATP. The inner and outer membranes are separated by an intermembrane space, and the inner membrane encloses the matrix. 3 Mitochondrion ncit http://purl.obolibrary.org/obo/NCIT_C13258 NCIT_C13258 Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Mitochondria contain distinctive ribosomes, transfer RNAs, amino acyl t-RNA synthetases, and elongation and termination factors. Mitochondria depend upon genes within the nucleus for many essential messenger RNAs. Mitochondria consist of two sets of membranes, a smooth continuous outer coat and an inner membrane arranged in tubules or more often in folds that form platelike double membranes (cristae). Mitochondria are the principal energy source of the cell and contains the cytochrome enzymes of terminal electron transport and the enzymes of the citric acid cycle, fatty acid oxidation, and oxidative phosphorylation. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP.