Transcript The Cell Theory and the Microscope

The Cell Theory and the
Microscope
• Robert Hooke (1665)
first described cells after
viewing a thin piece of
cork through a primitive
microscope. Hooke use
the word “cell” to
describe the honeycomb
shapes that he saw.
What he really saw were
the cell walls that
surround the once-living
plant cells in the bark.
They remind
me of the time
I was in jail….
Who’s
your
daddy?
• Anton van Leeuwenhoek
(1674) commonly known as
the father of microbiology,
used a simple microscope
to observe living cells in
blood and in water.
• Robert Brown (1820) used an improved
microscope to examine plant and animal
cells. He was first to describe the nucleus
of a plant cell.
WHAT THE
HECK IS
THAT????
• Theodor Schwann and Matthias
Schleiden (mid 1800’s) later concluded
that plants and animals were made up of
cells. This information was used to
develop the CELL THEORY.
I’m
cuter…
No, I’M
cuter…
Oh, go to
cells…
Four Parts of the Cell Theory
•
All living cells are composed of one or
more cells or products of cells.
Cells are the functional unit of life.
•
All basic chemical and physiological
functions (repair, growth, movement,
immunity, communication and digestion)
are carried out inside of cells.
3. Cells are the structural unit of
life.
• The structure or form of the overall body of
an organism is due to the structure and
form of the cells of which it is composed.
All cells come from pre-existing
cells.
•
Each cell contains genetic material that
was duplicated and passed to a daughter
cell.