Page 19 - Introduction to Microbiology

Microorganisms as cells

• The cell is the fundamental unit of all living matter

– Each cell is isolated from other cells by a cell membrane
(also a cell wall in certain cells)

– Inside the cell membrane are various structures and

biochemicals that enable the cell to function

• Cells differ from inanimate objects

– All cells show metabolism, reproduction, differentiation,

communication, movement and evolution