Carbon monoxide has of oxygen.

zero atoms
one atom
two atoms

Ithink that b is correct but just in case wait to see if someone else answers

Predator instincts is what causes it

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.