Mitochondrial disease is a group of disorders caused by dysfunctional mitochondria, the organelles that generate energy for the cell.itochondrial diseases are sometimes (about 15% of the time) caused by mutations in the mitochondrial DNA that affect mitochondrial function.
1 Surface-mounted light â the finished housing is exposed, not flush with surface. 2  Chandelier. 3  Pendant light â suspended from the ceiling with a chain or pipe.  Sconce â provide up or down lights; can be used to illuminate artwork, architectural details; commonly used in hallways or as an alternative to overhead lighting.
How to Convert a Hardwire Pendant Light to a Plug-In. by David Lipscomb. eHow. Pendant lights are normally two-wire affairs that simply connect to the wires in the ceiling with wire nuts. Therefore, making the transformation from pendant to plug-in is very simple, and requires almost no electrical knowledge to perform. Using conventional parts available at a hardware store, co...