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The Basic Unit
SWBAT state the cell theory; list
and describe the four functions
common to all cells
Specialized Cells

Cell


The tiny living structures that make up all
living things.
What does it mean if a cell is specialized?

They perform functions no other cells do
The Cell Theory

Who was the first person to use the word
cell?
Robert Hooke, 1665
 Noticed the tiny boxlike structures in a slice of
cork her was observing
 Looked like rows of cells

Cell Theory states
All cells come from preexisting cells
 All living things are made of cells and of
the products of cells
 The functions of living things are
performed by the cells they are made of

Cellular Function

All cells use energy


Without energy, cells dies
All cells manufacture materials
Growth and maintenance
 Waste


All cells respond to their environment
Adjust chemical levels
 Adjust activities


All cells reproduce themselves

Divide to create new cells