1. PLANT AND ANIMAL CELLS

2. Early Scientists’ Contributions:

3. Anton van Leeuwenhoek
First to see microbes or “animalcules” moving around

4. Robert Hooke ( )
Coined the term “cell”

5. Matthias Schlieden
All plants are made of cells

6. Theodor Schwann
All animals are made of cells

7. Karl Theodor Ernst von Siebold (1804-1885)
Microbes were living creatures made up of the same material as animals and plants

8. Rudolf Virchow
Cells can only arise from pre-existing cells

9. Cell Theory: All organisms are made up of one or more cells.
The cell is the basic unit of organization of all organisms.
All cells come from other cells all ready in existence.

10. Cross Section of an Animal Cell:

11. Cross Section: Animal Cell

12. Plant Cell Cross Section:

13. Plant Cell

14. Cell Functions

15. CELL WALL: PLANT
Function: Gives the cell most of its support and structure
A thick, rigid membrane that surrounds a plant cell
Bonds with other cell walls to form the structure of the plant

16. CELL MEMBRANE
Function: Semi permeable, allowing some substances to pass into the cell and blocking others.
Thin layer of protein and fat that surrounds the cell
   

17. Chloroplast Function: Where photosynthesis takes place
An elongated or disc-shaped organelle containing chlorophyll

18. Cytoplasm Function: Where the organelles are located.
The jellylike material outside the cell nucleus.
Cytoplasm

19. ENDOPLASMIC RETICULUM
Function: transports materials through the cell
Rough ER is covered with ribosome's that give it a rough appearance

20. Golgi Bodies
Function: Golgi bodies are the packaging and secreting organelles of the cell.
Are stacks of membrane-covered sacs that package and move proteins to the outside of the cell.

21. Lysosome Function: Where the digestion of cell nutrients takes place
Also called cell vesicles
Spherical organelles surrounded by a membrane
They contain digestive enzymes

22. Mitochondria Functions: Where energy is released.
Spherical to rod-shaped organelles with a double membrane
Membrane is infolded many times, forming a series of projections (called cristae)

23. Nucleus: The Manager
Function: Controls many of the functions of the cell
Spherical body containing many organelles, including the nucleolus
Contains DNA (in chromosomes)
Surrounded by the nuclear membrane

24. Ribosome's
Function: Small structures in the cytoplasm that create proteins.
Ribosome's are either free floating in the cytoplasm of a cell or attached to endoplasmic reticulum in a cell.

25. Vacuole
Function: Like your suitcase, a vacuole is a temporary storage space for the cell.
Fluid-filled, membrane-surrounded cavities inside a cell
Fills with food being digested and waste material that is on its way out of the cell