UPSC 2013 CDS 2 GK Paper

Mitochondria is the organelle in the cell that contains DNA, otherthan nucleus. .Mitochondrial DNA (mtDNA) is the DNA located in mitochondria that convert chemical energy from food into a form thatcells can use, adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of theDNA can be found in the cell nucleus. Mitochondrial DNA contains37 genes.