Transcript History of cells

History
of
Cell
Discovery
Cells are
the basic unit of structure
and function in living things
Robert Hooke
1635 – 1703
Hooke was one of the first people
to observe cells
He published a book,
Micrographia, in 1665.
It had ideas about:
the life cycle of mosquitoes
origin of craters on the moon
fossils and drawings of
microscopic things.
Thin slices
of cork from
the cork tree.
(tiny rooms –
cells)
He was really
looking at
dead cells –
what was left
was the cell
wall.
Anton van Leeuwenhoek
(1632-1723)
Anton van Leeuwenhoek’s
simple microscope
He looked at:
drops of lake water
scrapings from gums and teeth
water in rain gutters
He saw tiny moving organisms
and called the wretched
beasties “animalcules.”
Bacteria from the mouth
200 years later…
Matthias Schleiden (1804-1881)
German botanist
1838
he suggested that
all plants are
made of cells
Theodor Schwann (1810-1882)
German zoologist
1839
suggested that
animals, not just
plants are made of
cells
Rudolf Virchow (1821-1902)
German doctor
1855
“all cells come
from cells”
The work of
these last three
men led to…
The
Cell
Theory
The cell theory states:
All living things
are
made of cells
The cell theory states:
Cells are the
basic unit of
structure and
function in
living things
The cell theory states:
Living cells
only come from
other living
cells