History
tour
of the
cell . . . .
 1.
Robert Hooke
– 1665
– English
scientist
– Observed cork
under microscope
Cork Activity
Cork oak tree
He
said cork consisted of “great
many little boxes”.
It
reminded him of
small rooms in
which monks
lived…so he named
them . . .
CELLS
Next . . .
2. Anton van Leeuwenhoek
 1674
 1st to observe living cells
(in pond water)
 He concluded life seemed
to be everywhere.
More important findings
3. 1838—Schleiden:
– All plants are made up of cells
4. 1839—Schwann (think swan)
– All animals are made up of cells
5. 1855—Virchow
– All cells come from pre-existing cells
***then the Cell Theory is born!!!***
Video from: http://ed.ted.com/lessons/the-wacky-history-of-cell-theory
1.
All living things are
composed of cells
2. Cells
3.
ALL cells come
from preexisting
cells.
are the basic
units of structure
and function in all
living things.
Cell Diversity
Structure-to-function Activity
1.SHAPE –
• The shape of the cell is based on
the function the cell needs to
perform.
• Different types of cells have
different shapes.
*
Red blood cell
White blood cell
SIZE –
Cells vary in size from
macroscopic to microscopic
2.
Size examples
Microscopic cells
Macroscopic cells
What is the largest cell???
The smallest cells = bacteria
Ostrich egg
3. INTERNAL
ORGANIZATION:
• cells contain
organelles to organize
their inside material
• Organelles= tiny organs
prokaryote
Eukaryote
Prokaryotes vs. Eukaryotes
(see other notes on board)