1. Cellular Transport

2. Do Your Cells Eat and Drink? Cells must take in water and nutrients in order to function. Mmm…..

3. What part of the cell allows it to take in nutrients and water?

4. Of What is the Cell Membrane Made? Proteins and Lipids

5. What are the Proteins in the Cell Membrane? Receptor Channel Marker Receptor Proteins receive chemical information (hormones). Channel Proteins bring polar compounds (ex: glucose) into the cell. The compound has to fit the shape of the channel Marker Proteins identify the cell. They are the “name tags.”

6. Cells move substances through the cell membrane by a process called transport Two Types of Transport: –Passive Transport –Active Transport

7. What is Diffusion or Passive Transport? Requires no energy from cell. Molecules move from high concentration to low concentration. Molecules move with the concentration gradient.

8. What’s happening?

9. How would diffusion happen in a cell?

17. Osmosis is a type of diffusion Cell Membrane

18. Osmosis is a type of diffusion Cell Membrane

19. Osmosis is a type of diffusion Cell Membrane

20. Osmosis is a type of diffusion Cell Membrane

21. Osmosis is a type of diffusion Cell Membrane

22. Osmosis is a type of diffusion Cell Membrane

23. Osmosis is a type of diffusion Cell Membrane

24. Osmosis is a type of diffusion Cell Membrane

25. Figure 8.11 Osmosis

26. How does Passive Transport affect my cells?

27. What would happen to the animal cells in each beaker? 100% Distilled Water 80% H 2 O 70% Water 30% Dissolved Substances 80% H 2 O 80% Water 20% Dissolved Substances 80% H 2 O

28. Which way did the water move? 100% Distilled Water 80% H 2 O Why did the cell get so big?

29. Which way did the water move? 80% Water 20% Dissolved Substances 80% H 2 O Why did the cell stay the same size?

30. Which way did the water move? 70% Water 30% Dissolved Substances 80% H 2 O Why did the cell get so small?

31. Figure 8.12 The water balance of living cells

32. HELP WANTED! Facilitated Diffusion channel proteins help substances (glucose) pass through the cell membrane. Still passive transport - no energy required. I’m a Channel, I can help!

33. HELP WANTED! I’m a Channel, I can help!

34. HELP WANTED! I’m a Channel, I can help!

35. HELP WANTED! I’m a Channel, I can help!

36. HELP WANTED! I’m a Channel, I can help!

37. HELP WANTED! I’m a Channel, I can help!

38. HELP WANTED! I’m a Channel, I can help!

39. HELP WANTED! I’m a Channel, I can help!

40. HELP WANTED! I’m a Channel, I can help!

41. HELP WANTED! I’m a Channel, I can help!

42. Explain what is happening

50. REVIEW 1.What part of the cell regulates what goes in and out? 2.What are the two components of the cell membrane? 3.What are the characteristics of passive transport?

51. MORE REVIEW 1.Explain diffusion. 2.Explain osmosis. 3.Explain facilitated diffusion. 4.What is the role of the channel protein in facilitated diffusion?

52. Even MORE Review! 1.What happens to an animal cell when there are more dissolved substances on the outside of the cell? 2.The inside? 3.When there are equal amounts?

53. How is Active Transport different? 1.Active transport requires energy. 2.Molecules move from low concentration to high concentration 3.Molecules move against concentration gradient.

55. What is this cell doing?

56. Endocytosis Cells bring in particles using cell membrane –There are 2 types: Phagocytosis Pinocytosis http://w3.uokhsc.edu/human_physiology/ATPase.htm

57. Phagocytosis This is the ingestion of large particles. Your white bloods cells also do this. Amoeba

58. Pinocytosis Tiny pockets form along cell membrane, and pinch off into vacuoles inside the cell. Sometimes called “Cell Drinking”

59. Exocytosis This is how the cell gets rid of waste.

60. REVIEW 1.How is Active transport different from passive? 2.What part of the cell is used to bring in particles? 3.How does a cell (including white blood cells) take in LARGE particles? 4.How does a cell take in small or liquid particles?