1. PEOPLE WHO MADE DISCOVERIES ABOUT SEEING CELLS & CELL COMPONENTS
CELL THEORY
PEOPLE WHO MADE DISCOVERIES ABOUT SEEING CELLS & CELL COMPONENTS

2. ANTON VAN LEEUWENHOEK
INVENTED THE HAND-HELD MICROSCOPE

3. ROBERT HOOKE CAME UP WITH THE TERM “CELLS”
HE LOOKED AT CORK UNDER A MICROSCOPE AND SAW CHAMBERS, LIKE IN A MONASTARY
ARE THESE PLANT OR ANIMAL CELLS?

4. ROBERT BROWN
NOTICED THAT CELLS HAVE A DARK CENTER
Think of Tootsie Pops!
WHAT WAS THIS?
THE NUCLEUS!

5. MATTHIAS SCHLEIDEN
BOTANIST, PLANTS ARE AGGREGATES OF INDEPENDENT, SEPARATE BEINGS. (cells)
THEY ARE MADE OF CELLS!

6. THEODORE SCHWANN
ANIMALS ARE MADE FROM CELLS!
NO KIDDING!

7. RUDOLF VIRCHOW ANIMALS COME FROM ANIMALS PLANTS COME FROM PLANTS
ALL CELLS ARISE FROM CELLS

8. SCHLEIDEN, SCHWANN & VIRCHOW
THEY ALL CONTRIBUTED TO WHAT WE CALL “CELL THEORY”
A. ALL LIVING THINGS ARE MADE OF ____
B. _______ ARE THE BASIC UNIT OF STRUCTURE/FUNCTION IN ORGANISMS
C. _____ COME FROM PRE-EXISTING ______

9. CELL STRUCTURE 4 MAIN COMPONENTS 1. CELL MEMBRANE 2. NUCLEUS-Eukaryote
PLANTS-ALSO HAVE A CELL WALL
2. NUCLEUS-Eukaryote
3. CYTOPLASM- interior gel-like texture
4. CYTOSKELETON-rigid exterior

10. ORGANELLES OF ANIMAL CELLS http://bcs. whfreeman

11. ORGANELLES OF PLANT CELLS

12. NUCLEUS nucleus magnified

13. CELL CYTOPLASM Where Organelles are in the cell

14. CELL MEMBRANE PHOSPHOLIPID STRUCTURE http://www. susanahalpine
LOVES WATER! ♥
AVOIDS WATER!

15. CELL MEMBRANE

16. Cytoskeleton Exterior layer

17. 3 Types of cytoskeletal structure
Microtubules example centrioles help with moving chromosomes & organelles
Actin filament/aka microfilaments help with cell’s motion, Ex. Muscle cell movement can slide.
Intermediate filaments cells rigid shape

18. Cell Surface Area to Volume Ratio
Sizes of various cells
Surface area to volume ratio is key
As cell volume increases, cell surface area can not keep up. Therefore, there is a limit to cell size.

19. Cell Surface to Volume Ratio

20. Levels of Organization in Organisms
Organ System
Organ-Organized tissues
Tissue- Layers of cells that perform a function
Cell
DNA
Atoms