Over the years, the safety of many food additives, from food dyes to trans fats, has come into question. A scare over a food additive may linger in our minds long after researchers find that there's actually no cause for alarm.
In cell biology, a mitochondrion (plural mitochondria) is an organelle found in most eukaryotic cells. Mitochondria are sometimes described as cellular power plants, because their primary function is to convert organic materials into energy. Note: The above text is excerpted from the Wikipedia article Mitochondrion, which has been released under the GNU Free Documentation License.
Best Answer: Mitochondria is within any eukaryotic cell. They are called the cellular power house because it is involved with making energy within the cell. Mitochondria are found in nearly all eukaryotes. They vary in number and location according to cell type.