1. Bell Ringer 1. The favorite activity is? 2. Least favorite? 3. How many students like to play sports after school? 4. Based on these data, would you say more students like to be around people or be alone? Number of Students

2. Cells 11/12/2012

3. Cell Theory (Schleiden and Schwann) 1. All living things are made up of one or more cells 2. Cells are the basic units of structure and function in organisms 3. All cells come from pre-existing cells

4. 2 main types of cells Prokaryotes (p. 57) Eukaryotes (p58-59)

5. Prokaryotes No Nucleus No Organelle Single Celled Organisms (bacteria)

6. Eukaryotes Eu – True Karyo – Nucleus Nucleus Membrane Bound Structures (organelle) Multicellular Organisms

8. Types of Eukaryotic Cells Plant Cells Cell Walls Chloroplasts Central Vacuole Animal Cells More Mitochondria Centrioles (used for cell division)

10. Eukaryotic Cells PlantAnimal

11. Eukaryotic Organelle Nucleus Function – Control Center Structure – membrane bound structure that houses DNA Nucleolus is where Ribosomes are made

13. Ribosomes and the ER Endoplasmic Reticulum – like a system of conveyor belts that move materials around throughout the cell Ribosomes – make proteins can be free or attached to the ER

15. Vacuoles Storage Larger and more numerous in plant cells

17. Mitochondria Power House Supplies the cell energy needs Have their own DNA and Ribosomes Why do animal cells have more mitochondria than plant cells?

18. Power House

19. Chloroplasts Found in Plant Cells Chloro – green Make Sugars

20. Golgi Apparatus Packing and Shipping

21. Cell Membrane Boundary Functions to maintain homeostasis All Cells have a cell membrane More on the cell membrane later…

22. Lysosomes Garbage Disposals Get rid of unwanted things in the cell Pac – Man

23. Cell Wall Plants and Prokaryotes Give cells their strength and shape

24. Cytoplasm Found in all cells Gel-like liquid that fills the empty space in the cell Holds organelles in place

25. The end… Except for one more cartoon…