What are the facts which prove that all cells are autonomous?

All cells are autonomous because of the following facts:
(1) Each and every cell converts non-living materials into components of living matter.
(2) Each cell builds up its own macromolecules from micromolecules.
(3) All cells obtain or manufacture food.
(4) A cell is always building a new structure to replace the worn out ones.
(5) Cells possess a definits life span