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

6. Concentration Gradient Salt Water WATER SALT Cover on

7. http://www.indiana.edu/~phys215/lecture/lecnotes/lecgraphics/diffusion2.gif

9. 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

10. 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?

11. Lipid Phosphate head Lipids: Phospholipids

12. Phospholipid Bilayer

14. FLUID- MOSAIC MODEL

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

18. Outside of Cell Inside of Cell

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

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

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

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

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

25. Water Vacuole

26. Contractile Vacuoles

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

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

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

31. Osmosis in an animal Cell

32. Osmosis in a Plant Cell

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

35. Facilitated diffusion is very specific

39. ACTIVE TRANSPORT

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

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

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

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

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

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

51. Stores strong digestive enzymes

54. Lysosomes are created from the Golgi Apparatus.

55. Golgi Body

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

61. 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?

63. Exocytosis