Cells

I). Cell Theory

        A). A cell is the basic structural and functional

        B). The activity of an organism depends on  cells.

        C). Principle of complementarity:

        D). Continuity of life has a cellular basis.

II). Cell Size

smaller the size the larger the ratio to surface area

III). Types of Cells

A). Viruses

B). Prokaryotic Cells

C). Eukaryotic cells