HELP TIMED

The diagram below represents 2 single felled organisms. These organisms carry out activities needed to maintain homeostasis by using specialized internal

A) tissues
B) systems
C) organelles
D) organs

Ibelieve its b but u might have to

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.