None, they're the powerhouse of the cell.
Does it really have to be a lightbulb
One to change the lightbulb and one to drive down to Kent to pick him/her up.
Twelve, you got a problem with that
Screw it. EDIT: has a better answer
Depending what you're charged with can really effect how easily you're getting across.
Mitochondria, cause I'm the powerhouse of the cell
Mitosis