- The 8 levels of organization in hierarchical order
from the broadest to most specific are:

The answer is joseph is observing the colour of the reaction mixture to see whether proteins are present in the given solution.

Orbit is represented by the blank space

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.