Which of the following statements is NOT included in the cell theory?

A) All cells come from preexisting cells.
B) All plants and animals are composed of cells.
C) Cells are not the smallest living units that perform physiological functions.
D) Each cell works to maintain itself at the cellular level.

Cell Theory

A fundamental principle in biology stating that all living things are composed of cells, cells are the basic units of life, and all cells come from pre-existing cells.

Physiological Functions

The biological processes and activities carried out by the organs and systems of an organism to maintain life.

Preexisting Cells

The principle that cells are formed from the division of existing cells, as stated in the cell theory.