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Cell Theory
Important contributors
Anton Van
Leeuwenhoek:
 In 1600’s used
a single lens
microscope to
view bacteria.
Cell Theory
 Leeuwenhoek’s
single lens
microscope
Cell Theory
Robert Hooke:
 Looked at
cork and
called the
structures
cells.
Cell Theory
Robert Brown:
 In the 1800’s
was the first
to describe
the nucleus.
Cell Theory
Matthias Schleiden:
 Looked at plant
cells.
 Developed idea
that all plants are
made of cells.
Cell Theory
Theodor Schwann:
 Looked at animal
cells.
 Extended cell
theory to animals.
Cell Theory
Rudolph Virchow:
 German doctor.
 Developed one of
the central ideas
of cell theory,
cells come from
pre-existing cells.
Cell Theory
Cell Theory –
fundamental idea of
biology
Three main parts of the
theory.
Cell Theory
1) All living things
are made of one or
more cells.
Cell Theory
2) Cells are the
basic units of
structure and
function in living
things.
Cell Theory
3) All cells come
from other cells.