Which theory suggests all living things are made up of a cell or cells? cell theory

organismal theory

The three scientists that contributed to the development of cell theory are Matthias Schleiden, Theodor Schwann, and Rudolf Virchow. A component of the cell theory is that all living things are composed of one or more cells. A component of the cell theory is that the cell is the basic unit of life.

cell theory is the answer without adding all the other words