1. The Great Diversity of Life
Unit 3: Cells
Chapter 7: Cell Structure and Function
Section 7-4: The Diversity of Cellular Life
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2. Vocabulary
Cell specialization
Tissue
Organ
Organ system

3. 4 Levels of Organization
Cells (muscle cells)
Tissue (smooth muscle tissue)
Organ (stomach)
Organ System (digestive system)

6. Life surrounds every corner of the planet.
Below the earth
Deep under the sea
Inside of bodies

7. REMEMBER… All living things are composed of cells.
Cells are the basic living units of all organisms.

8. 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

10. 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.

12. Red Blood Cell Specialization
Transport O2
Contain protein that binds to O2 in the lungs and carries it throughout the body.

13. Pancreatic Cell Specialization
Pancreas produces proteins that make digestion possible.
Contains many ribosomes and rough ER where proteins are produced.