1. Wednesday, Feb 26th, 2014 Did you know…
The femur (thigh bone) is the largest & longest bone in the human body.
The jaw is the strongest muscle in the human body in terms of exerting force.

2. Cell
Basic unit of life
         

3. Cells Discovered Long Ago
What technology made discovery of cells possible?
Development of microscopes

4. Hans & Zacharias Janssen (1595)
1st compound microscope
Spectacle makers

5. Robert Hooke (1665) 1st person to observe & name cells
Thin slices of cork from tree
Dead cells (only cell walls remained)
Named after monastery cells

6. Cork being harvested

7. To remember Robert Hooke…

8. Anton van Leeuwenhoek (1674)
drops of pond water & bacteria from his mouth
Saw tiny moving orgs
Named“animalcules”

9. Matthias Schleiden (1838) German botanist
Botany = plants
Stated: ALL plants are made of cells

10. To remember Matthias Schleiden…

11. Theodor Schwann (1839) German zoologist
Zoology = animals
Stated: ALL animals are made of cells

12. To remember Theodor Schwann…
Swans
are animals!

13. Rudolf Virchow (1855) German pathologist
Pathology = diseases
Stated: ALL cells come from pre-existing cells
Pronounced veer-coh

14. The Cell Theory ALL living things must meet ALL 3 RULES:
All living things are made of cells
Cells are the basic units of living things
Living cells only come from pre- existing living cells
of-cell-theory

15. Prokaryote Eukaryote Large & complex Small & simple Multicellular
Has membrane-bound organelles (i.e., has nucleus)
Genetic info (in nucleus)
Need oxygen
Examples: plants, animals, fungi, protists
Small & simple
Unicellular
Lacks membrane-bound organelles (i.e., no nucleus)
Genetic info (not in a nucleus)
Don’t need oxygen
Examples: bacteria

16. Prokaryotes Remember: Primitive Prokaryotes!

17. Eukaryotes Remember: YOU carry a nucleus