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The Cell
Theory
Important Scientists

Many important scientists aided in the
discovery of the cell and the formulation
of the cell theory
Zacharias Janssen
1580-1638


Dutch scientist
Built a compound
microscope with his
father in 1595
Anton Von Leeuwenhoek
1632-1723


Dutch scientist that
made the first simple
microscope
Discovered bacteria
Robert Hooke
1635-1703


Came up with the
word "cell" after
studying cork under
the microscope
Wrote Micrographia
Matthias Schleiden
1804-1881

German botanist who
concluded that all
plants are made of
cells
Theodor Schwann
1810-1882

German physiologist
that concluded all
animals are made of
cells
Rudolf Virchow
1821-1902

German histologist
that concluded all
cells come from other
cells
The Cell Theory



All organisms are made of cells.
Cells are the basic units of structure and
function for all living things.
All cells come from other cells.
The Cell

The basic unit of structure and function of
living things
Prokaryote


Cells that do not have
a nucleus or other
cellular compartments
The first cells were
prokaryotes
Eukaryote

Cells that have a
nucleus surrounded
by a nuclear
membrane
Unicellular

Organism composed
of one cell
Multicellular

Organism composed
of many cells
In all living things, the presence of what
structure supports the cell theory.
A cell wall
B cell membrane
C vacuole
D chloroplast