Mitochondria

• bodies found in the cytoplasm that convert the energy in the chemical bonds of organic molecules into ATP.
  Source: Anthromorphemics
• somewhat regularly shaped bodies in cytoplasm for producing cellular enzymes; singular mitochondrion
  Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
• cytoplasmic organelles that function in oxidative metabolism and energy production; they carry their own DNA and are important in certain maternally inherited disorders
  Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
• Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP). Mitochondria contain their own small chromosomes. Generally, mitochondria, and therefore mitochondrial DNA, are inherited only from the mother.