Which statement is part of cell theory? A cell is the basic unit of all nonliving things. Everything on Earth is made of cells. All cells come from preexisting cells.

The three generally accepted parts of modern cell theory include: All known living things are made up of one or more cells. All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms.

All cells come from preexisting cells