Answer:
1 All living organisms are composed of one or more cells.
2 The cell is the most basic unit of life. ...
3 All cells arise only from pre-existing cells.
a cell theory is cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology.
Explanation:
