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The Amazing Animal cell!!
“Hey, I thought cells were just for convicted
cattle rustlers and horse thieves!”
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Why are Animal Cells so
Amazing?
CONVERT FOOD INTO ENERGY
ADAPT TO OUTSIDE STIMULI
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Cells can determine:
• How productive cattle will
be.
• How meat tastes!
• Why animals get sick.
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CELLS CAN SPECIALIZE!!
Nerve cell
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Amazing characteristics of cells!
a. They are the smallest unit of a living system.
b. They all hold the blueprints of how an animal is put together.
c. They are vital to all life functions.
d. They can reproduce!!
e. They can change the physical form of an animal. Good traits and bad.
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There are basically two cell types
• Eukaryotic cells
• (membrane bound)
Prokaryotic cells
(before nucleus)
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A Prokaryote Cell
• Single-celled
organisms
• Lacks internal
structures
• Example: Bacteria
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A Eukaryote Cell
• Has internal membrane- bound structures called organelles. The largest organelle is the Nucleus, which contains the cell’s DNA.
• May be made of one or many cells.
• Makes up most of all living cells.
Red blood cell
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How big are animal cells?
1 centimeter = 10 millimeters
1 millimeter = 1,000 micrometers
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Cell sizes range from 200
micrometers…
pinhead
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200 micrometers
Pin head
Human hair
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200 micrometers
Dust Mite
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20 micrometers
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20 micrometers
Lymphocyte
Red Blood
Cell
Pollen grain
Bakers yeast
E-coli
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200 nanometers
Ebola virus
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To 20 nanometers
Rhinovirus
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How did scientists discover
cells?
• Using Microscopes!! –Instrument developed by 16th
century Anton van
Leeuwenhoek.
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CELL Theory states:
• All organisms are composed of
one or more cells.
• The cell is the basic unit of
organization of all organisms.
• All cells come from pre-existing
cells.
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Let’s go and look at some cells!!
Step # 1 Teacher demonstration of microscope use.
Step # 2 Students begin Microscope Lab 8.1 due today!!