1. MOVEMENT IN AND OUT OF A CELL CELL MEMBRANE PLASMA MEMBRANE

2. TYPES OF TRANSPORT Passive Transport “LAZY” No energy (ATP) required Controlled by the movement of molecules Active Transport “HIGH ENERGY” Energy (ATP) Required Controlled by the cell

3. What is DIFFUSION?  Concen- tration gradient  No energy  High to low http://www.biologycorner.com/bio1/diffusion.html

4. Until Equilibrium Is reached

5. Concentration Gradient Salt Water WATER SALT Cover on http://www.indiana.edu/~phys215/lecture/lecnotes/lecgraphics/diffusion2.gif

7. What is OSMOSIS? Diffusion of water Water moves from high to low http://ntri.tamuk.e du/class/ryan/pass ive.html WATER Lots of Water Here Not Lots of Water Here http://www.uic.edu/classes/bios/bios100/lectures/osmosis.htm

8. What is the function of membrane? Homeostasis Controls movement of materials in and out of cell Do you remember what organic molecule the membrane is made of?

9. Lipid Phosphate head Lipids: Phospholipids

10. Phospholipid Bilayer

12. FLUID- MOSAIC MODEL

14. ALSO CONTAINS: proteins: transport, identification, glue cholesterol: used to help keep it “solid” Carbo: cell to cell contact (glycoproteins)

15. Outside of Cell Inside of Cell

17. PASSABLE Monomers: amino acids, glucose, glycerol, F.A. H 2 O, CO 2, O 2,

18. NON-PASSABLE Polymers: starch, proteins, triglycerides charged ions (Na +, Cl - )

19. What happens when a cell is placed in a solution with the same concentration as inside the cell? Normal Red Blood Cells ISOTONIC SOLUTION Iso = same Tonic = water The cells stay the same size

20. What happens when an animal cell is placed in pure water? HYPOTONIC SOLUTION The cells swell Swollen Red Blood Cells

21. What happens to plants in a hypotonic solution? Plant cell placed in pure water? Will not rupture due to cell wall Turgor Pressure Video

22. Water Vacuole

23. Contractile Vacuoles

25. What happens to an animal cell placed in salt water? HYPERTONIC SOLULTION The cells shrivel up Shriveled Red Blood Cells

26. Plants in a hypertonic Solution Plant cell placed in salt water? Cytoplasm and membrane shrivel up Cell wall remains in place Plasmolysis

27. http://www.youtube.com/watch?v=V56Zy7uLFEAwww.youtube.com/watch?v=V56Zy7uLFEA

28. Osmosis in an animal Cell

29. Osmosis in a Plant Cell

31. Facilitated Diffusion Faster with help of a protein No chemical reaction NO ENERGY needed! Examples: enzymes and glucose

32. Facilitated diffusion is very specific

36. ACTIVE TRANSPORT

37. What if you need to get molecules to go against diffusion?

38. Against the concentration gradient Uses energy to “pump” molecules in (or out)

40. What if the food is too big to fit through the cell membrane? ENDOCYTOSIS 2 TYPES

45. PHAGOCYTOSIS PSEUDOPODS: false-foot Creates a food vacuole Pinocytosis: cell drinking, small particles

46. Feeding using pseudopodia (Phagocytosis) You Tube http://www.youtube.com/watch?v= W6rnhiMxtKU&feature=related

47. What is needed to digest another cell after it is eaten?

48. Stores strong digestive enzymes

50. Lysosomes are created from the Golgi Apparatus.

51. Golgi Body

53. http://www.sumanasinc.com/webco ntent/animations/content/vesiclebu dding.html

57. EXOCYTOSIS Cell egestion Removal of undigested food Vacuole moves to edge of cytoplasm and opens up Opposite of endocytosis What must a cell do with undigested waste?

59. Exocytosis