Cell

1. TheCell Theory

2. TheCell Theory
The developmentand refinement
of magnifying lenses and light
microscopes made the observation
and description of microscopic
organisms and living cells
.
possible

3. TheCell Theory
Many scientists contributed to
thecell theory

4. TheCell Theory
3 :
parts to the cell theory
1. Thecell is thebasic unitof life
2. All living things aremadeof cells
3. -
Cells comefrompre existing cells

5. Anton van Leeuwenheok
(1632-1723)
He invented the
.
firstmicroscope
Dutch scientist
who was the first
to see bacteria
.
and protists

6. ’
Leeuwenhoek s Microscope

7. (1635-1703)
RobertHooke
He observed
thatcork has
small regular
boxes in itthat
he called
.
“cells”

8. ’
Hookes cork cells

9. Theodor Schwann and Matthais
Schleiden stated thatall living things
. (1839)
are made of cells
Matthais Schleiden
( )
plants
Theodor Schwann
( )
animals

10. (1821-1902)
Rudolph Virchow
German
scientist
who
discovered
thatall cells
come from
-
pre existing
.
cells

11. TheCell Theory
Continued advances in microscopy
allowed observation of cell
.
organelles and structure

12. Electron Microscopes
( ):
Scanning Electron Microscope SEM
bounces electrons off of a whole
- 3-
gold coated sample to create vivid
D images
( ):
Transmission Electron Microscope TEM
bounces electrons off of a sliced
sample to create very detailed
images

13. ...
Questions
?
Who used the firstmicroscope
Who said thatplants were made of
?
cells
?
Who coined the term“cell”
Who said thatall animals were made
?
of cells
Who said thatcells mustcome from
?
existing cells

14. ...
Statethecell theory
Thecell is thebasic unitof
structure.
Thecell is thebasic unitof
function.
-
All cells arisefrompre existing
cells.