What is another name for the moral of a story

The significance, point, message, or meaning of the story would all work.

Hope this helps :)

Also I think parable is another word for moral of the story

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.