the great diversity of life unit 3: cells chapter 7: cell structure and function section 7-4: the...
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The Great Diversity of Life
Unit 3: CellsChapter 7: Cell Structure and FunctionSection 7-4: The Diversity of Cellular
LifeText pages: 190-193
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Vocabulary
Cell specialization Tissue Organ Organ system
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4 Levels of Organization
1) Cells (muscle cells)2) Tissue (smooth muscle tissue)3) Organ (stomach)4) Organ System (digestive system)
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Life surrounds every corner of the planet. Below the earth Deep under the sea Inside of bodies
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REMEMBER…
All living things are composed of cells.
Cells are the basic living units of all organisms.
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Unicellular Organisms
Unicellular = single celled organisms
Do everything you expect a living thing to do.
NUMEROUS- dominate life on earth Examples: yeast, algae cells,
bacteria
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Multicellular Organisms
Many cells Much variety and many types Success depends upon
communication Cell specialization: process through
which cells within the organism can develop in different ways to perform different tasks.
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Red Blood Cell Specialization
Red Blood Cells Transport O2 Contain protein that binds to O2 in
the lungs and carries it throughout the body.
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Pancreatic Cell Specialization
Pancreas produces proteins that make digestion possible.
Contains many ribosomes and rough ER where proteins are produced.
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