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.
The term âdichroic lampâ almost always refers to low-voltage MR11 or MR16 halogen spotlights. The interior surface of these lights is designed as a multifaceted reflector (MR), with the purpose of gathering up the widespread light of the burning tungsten filament and projecting it forward through the front of the lamp.