Under what kingdom would an organism with the following characteristics be classified? is multicellular has cells without cell walls is heterotrophic a) animalia b) archaebacteria c) protista d) plantae

Animalia

All animals have multiple cells
Animal cells don't have cell walls
Animals don't make their own food, they eat it from outside sources (they're heterotrophic)

Animalia because animal cells dont have cell walls only plant cells do.

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.