https://doi.org/10.1351/goldbook.M03937
Organelles
appearing in all eukaryotic cells which produce ATP as useful energy for the cell by oxidative phosphorylation
. The proteins
for the adenosine 5'-triphosphate (ATP)-generating electron transport of the respiration chain are located in the inner mitochondrial membrane
. Mitochondria contain many enzymes
of the citric acid cycle and for fatty acid β-oxidation
. Many of them are coded for by nuclear DNA
.