Download The Cell Theory

Evolution of Microscopes
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Section:
Slide # 2
A. Microscope Timeline
1590: Hans & Zacharias
Janssen: invented
compound light
microscope
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Section:
Slide # 3
1667: Robert Hooke:
studied cork and saw tiny,
regular shaped “boxes”. He
named them cells.
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Slide # 4
Father of Microbiology
1674: Anton van Leeuwenhoek: used the
simple compound microscope to view pond water.
He observed small organisms swimming around.
He was the first to observe bacteria
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Section:
Slide # 5
1831: Robert Brown
•Discovered nucleus in
orchid cells
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1838: Matthais Schleiden:
Co-founder of the Cell Theory
– All plants are made of
cells
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Section:
Slide # 7
1839: Theodor Schwann:
Co-Founder of the Cell Theory
•All animals are made of cells
•Cell is the basic unit of function
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Slide # 8
1855: Rudolf Virchow:
•New cells are formed only
from preexisting cells
Bacterial cell producing a
new bacterial cell.
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Slide # 9
The Cell Theory
Three statements of the cell theory:
1. All living things are made up of 1 or more
cells.
2. The cell is the basic unit of function.
3. New cells come from preexisting cells.
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Section:
Prokaryotic Cells : simple, single celled
organisms that lack a true nucleus.
– Can exist in a large range of
environments.
• They can live in hot, harsh temperatures
• They can live without oxygen
• Some can even make their own food
• Bacteria are the only prokaryotic cells
10
Eukaryotic Cells – cells that contain a TRUE nucleus
with DNA inside.
– Considered to be complex because it has
organelles
11
What is an organelle?
An organelle is a structure that carries
out specific activities in the cell.
Organelle means “little organ”
12
IDENTIFY THE FOLLOWING
CELLS AS PROKARYOTIC OR
EUKARYOTIC.
EXPLAIN WHY YOU CHOSE THAT
ANSWER.
B
A
1. Identify the
cellular parts
and give their
function.
2. What type of
cell is this,
prokaryotic or
eukaryotic?
F
C
E
D
Word Bank:
Chloroplast, Vacuole,
Mitochondria, Nucleus,
Cell membrane, Cell Wall
Contains genetic material (DNA or RNA), nucleus present,
living, Eubacteria, Archaebacteria, Animalia, Protist, Fungi,
Plantae, membrane bound organelles, has a cell membrane,
has a cell wall, ribosomes
PROKARYOTES
Both
EUKARYOTES