1. Special Cells

2. I. Living Things Are Organized Into Systems
The largest system is an organ system.
The order of organization is:
organ system  organs  tissues  cells
All of these systems, including cells, are specialized. What does specialized mean?
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3. I. Living Things Are Organized Into Systems
Why do you think cells are specialized? Why don’t they all have the same structure and function?
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4. II. Can you figure out the functions of these cells based on their structure?

6. Awesome video

7. STRUCTURE
FUNCTION?

8. Bacteria also have flagellum

9. STRUCTURE
FUNCTION?

12. STRUCTURE
FUNCTION?

14. III. So, where do all these special cells come from?
Sperm fertilizes egg
The cell divides into more cells
The cells are called STEM CELLS

16. III. So, where do all these special cells come from?
Stem cells are called pluripotent because they are unspecialized and can give rise to any type of cell.
Even as an adult, a person has stem cells that can divide into more stem cells or differentiate into other types of cells.

18. III. So, where do all these special cells come from?
Because stem cells can become any type of cell, there is a large amount of research being conducted to determine how they could be used to help people with diseases and other health problems.

19. How Do We Get Stem Cells?