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

3. Cell/Plasma Membrane Controls movement into/out of cell Maintains homeostasis Made of phospolipids

4. Cell Membrane

5. 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

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

7. Until Equilibrium Is reached

8. Concentration Gradient Salt Water WATER SALT Cover on

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

11. OSMOSIS: The diffusion of water

13. 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

14. 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?

15. Lipid Phosphate head Lipids: Phospholipids

16. Phospholipid Bilayer

18. FLUID- MOSAIC MODEL

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

22. Outside of Cell Inside of Cell

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

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

26. What happens when a cell is placed in a solution with the same concentration as inside the cell? Normal Red Blood Cells Water In = Water Out ISOTONIC SOLUTION

27. What happens when an animal cell is placed in pure water? Swollen Red Blood Cells Water In < Water Out Water rushes in Cell bursts Hypertonic Solution

29. What if you live in fresh water?

30. https://www.youtube.com/watch?v=iG 6Dd3COug4

31. Contractile Vacuoles

32. What happens to an animal cell placed in salt water? Shriveled Red Blood Cells Water In > Water Out Water leaves the cell Cell shrivels HYPERTONIC SOLULTION

33. https://www.youtube.com/watch?v=OY oaLzobQmk

34. Osmosis in an animal Cell

35. Osmosis in a Plant Cell

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

37. Water Vacuole

38. https://www.youtube.com/watch?v=SooSsKkJo1o

39. https://www.youtube.com/watch?v=V56Zy7uLFEA

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

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

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

45. Facilitated diffusion is very specific

48. ACTIVE TRANSPORT

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

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

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

53. https:// www.youtube.com/watch?v=pvOz4V699gk

55. ACTIVE TRANSPORT Endocytosis Using ENERGY to “eat” food that is too large to pass through the membrane.

57. PHAGOCYTOSIS PSEUDOPODS: false-foot Creates a food vacuole

59. https://www.youtube.com/watch?v=W 6rnhiMxtKU&feature=related https://www.youtube.com/watch?v=W 6rnhiMxtKU&feature=related

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

61. Stores strong digestive enzymes

63. Lysosomes are created from the Golgi Apparatus. Golgi also removes toxins and waste product to outside the cell.

64. Golgi Body

66. https://www.youtube.com/watch?v=K7yku3sa4Y8

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

71. 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?