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 clean pendant lights. View in gallery. These are usually easy to reach and you can clean them in place. First, turn off the light and let the bulbs cool. Spray the outside of the pendant with a cleaning solution and then wipe it with a microfiber cloth.Then clean the bulbs and also wipe the extension rods and cables with a dry cloth.iew in gallery. These are usually easy to reach and you can clean them in place. First, turn off the light and let the bulbs cool. Spray the outside of the pendant with a cleaning solution and then wipe it with a microfiber cloth.