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Cellular Transport Chapter 8
The detailed structure of an animal cell’s plasma membrane
The fluidity of membranes
Some functions of membrane proteins
Cells move substances through the cell membrane by a process called  transport <ul><li>Two Types of Transport: </li></ul><...
What is Diffusion or  Passive Transport? <ul><li>Requires  no energy  from cell. </li></ul><ul><li>Molecules move from  </...
The diffusion of solutes across membranes
What’s happening?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
How would diffusion happen in a cell?
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis is a type of diffusion Cell Membrane
Osmosis
HELP WANTED! <ul><li>Facilitated Diffusion </li></ul><ul><li>tranport proteins help substances (glucose) pass through the ...
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
HELP WANTED! I’m a Channel, I can help!
Two models for facilitated diffusion
Water balance of cells without walls: 100% Distilled Water 80% H 2 O 70% Water 30% Dissolved Substances 80% H 2 O 80% Wate...
Which way did the water move? Why did the cell get so big? 100% Distilled Water 80% H 2 O
Which way did the water move? Why did the cell stay the same size? 80% Water 20% Dissolved Substances 80% H 2 O
Which way did the water move? Why did the cell get so small? 70% Water 30% Dissolved Substances 80% H 2 O
The water balance of living cells
The contractile vacuole of  Paramecium : an evolutionary adaptation for osmoregulation
REVIEW <ul><li>What part of the cell regulates what goes in and out? </li></ul><ul><li>What are the two components of the ...
MORE REVIEW <ul><li>Explain diffusion. Why does it occur? </li></ul><ul><li>Explain osmosis.  Why does it occur? </li></ul...
Even MORE Review! <ul><li>What happens to an animal cell when there are more dissolved substances on the outside of the ce...
How is Active Transport different? <ul><li>Active transport requires  energy. </li></ul><ul><li>Molecules move from  low  ...
Review: passive and active transport compared
The sodium-potassium pump Active Transport
An electrogenic pump
Cotransport
Endocytosis <ul><li>Cells bring large in particles using cell membrane </li></ul><ul><ul><li>There are 2 types: </li></ul>...
Phagocytosis <ul><li>This is the ingestion of large particles. </li></ul><ul><li>Your white bloods cells also do this. </l...
Pinocytosis <ul><li>Tiny pockets form along cell membrane, and pinch off into vacuoles inside the cell .  Sometimes called...
Exocytosis <ul><li>This is how the cell gets rid of waste. </li></ul>
The three types of endocytosis in animal cells
REVIEW <ul><li>How is Active transport different from passive? </li></ul><ul><li>What part of the cell is used to bring in...
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Ch.8 cell transport

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  • This is going to show how cells transport substances in and out.
  • Ask the kids what the word transport means. (To move from one place to another). Cells need to move substances in and out in order to function.
  • These are the three characteristics of passive transport. Concentration gradient – molecules flow with the movement of molecules. “Goes with the flow” – the different concentrations within a space.
  • Have students explain what is happening in the animation. Starts out highly concentrated and moves (diffuses) to achieve equilibrium. You can use the analogy of having all 30 students sitting at one desk. They would all move to even themselves out.
  • Tell the kids to watch the molecules moving across the membrane. Ask why they are moving. – to reach equilibrium. Notice that some molecules are disappearing (they are being used.)
  • Ask what the “Mickey Mouse” molecules represent. - water (They should know this from previous powerpoints). Have the students explain to what is happening. Include movement from high to low.
  • Facilitated Diffusion – channel proteins allows substances into the cell. Remember, the cell does not use energy during passive transport.
  • Facilitated Diffusion – channel proteins allows substances into the cell. Remember, the cell does not use energy during passive transport.
  • Ask the students to predict what would happen to the cells in the beaker. You may want to explain solutions first. Dissolved substances would be sugars, salts, ions, etc.
  • Have the students predict – and then show the answer. You have to click to get the beaker and the question to show.
  • Predict and show answer.
  • Predict and show answer.
  • Cell membrane Proteins and lipids. Active and passive no energy, high to low, and with concentration gradient.
  • Movement of substances across a membrane. To reach equilibrium Diffusion of WATER across a membrane. To reach equilibrium. Diffusion assisted with channel proteins. To help molecules diffuse across.
  • Water moves out of the cell, causing it to shrink. Water moves inside the cell, causing it to swell. The cell stays the same size.
  • Ask the students what the energy is - ATP
  • Endocytosis is the process of brining particles into the cell. To demonstrate with the use of channels proteins, click on the link at the bottom of the page. You must close the browser window to return to the powerpoint.
  • Make sure to point out that the diagram is an amoeba, not a human cell. As the “food particle” moves in the cell, it fuses with lysosomes to be digested.
  • For animation, point out to the students that the cell doesn’t “spit” the contents out, like it does in the picture. The particles move into the cell and become part of a vacuole.
  • The blue particle should have “waste” particles in it, but does not. Make sure this is pointed out to the students. The waste fuses to the cell membrane and is then released into the environment.
  • Uses energy, moves against concentration gradient, goes from low to high. Cell membrane Endocytosis – phagocytosis pinocytosis.
  • Transcript of "Ch.8 cell transport"

    1. 1. Cellular Transport Chapter 8
    2. 2. The detailed structure of an animal cell’s plasma membrane
    3. 3. The fluidity of membranes
    4. 4. Some functions of membrane proteins
    5. 5. Cells move substances through the cell membrane by a process called transport <ul><li>Two Types of Transport: </li></ul><ul><ul><li>Passive Transport </li></ul></ul><ul><ul><li>Active Transport </li></ul></ul>
    6. 6. What is Diffusion or Passive Transport? <ul><li>Requires no energy from cell. </li></ul><ul><li>Molecules move from </li></ul><ul><li>high concentration to </li></ul><ul><li>low concentration. </li></ul><ul><li>Molecules move with the </li></ul><ul><li>concentration gradient. </li></ul>
    7. 7. The diffusion of solutes across membranes
    8. 8. What’s happening?
    9. 9. How would diffusion happen in a cell?
    10. 10. How would diffusion happen in a cell?
    11. 11. How would diffusion happen in a cell?
    12. 12. How would diffusion happen in a cell?
    13. 13. How would diffusion happen in a cell?
    14. 14. How would diffusion happen in a cell?
    15. 15. How would diffusion happen in a cell?
    16. 16. How would diffusion happen in a cell?
    17. 17. Osmosis is a type of diffusion Cell Membrane
    18. 18. Osmosis is a type of diffusion Cell Membrane
    19. 19. Osmosis is a type of diffusion Cell Membrane
    20. 20. Osmosis is a type of diffusion Cell Membrane
    21. 21. Osmosis is a type of diffusion Cell Membrane
    22. 22. Osmosis is a type of diffusion Cell Membrane
    23. 23. Osmosis is a type of diffusion Cell Membrane
    24. 24. Osmosis is a type of diffusion Cell Membrane
    25. 25. Osmosis
    26. 26. HELP WANTED! <ul><li>Facilitated Diffusion </li></ul><ul><li>tranport proteins help substances (glucose) pass through the cell membrane. Still passive transport - no energy required. </li></ul>I’m a Channel, I can help!
    27. 27. HELP WANTED! I’m a Channel, I can help!
    28. 28. HELP WANTED! I’m a Channel, I can help!
    29. 29. HELP WANTED! I’m a Channel, I can help!
    30. 30. HELP WANTED! I’m a Channel, I can help!
    31. 31. HELP WANTED! I’m a Channel, I can help!
    32. 32. HELP WANTED! I’m a Channel, I can help!
    33. 33. HELP WANTED! I’m a Channel, I can help!
    34. 34. HELP WANTED! I’m a Channel, I can help!
    35. 35. HELP WANTED! I’m a Channel, I can help!
    36. 36. Two models for facilitated diffusion
    37. 37. Water balance of cells without walls: 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
    38. 38. Which way did the water move? Why did the cell get so big? 100% Distilled Water 80% H 2 O
    39. 39. Which way did the water move? Why did the cell stay the same size? 80% Water 20% Dissolved Substances 80% H 2 O
    40. 40. Which way did the water move? Why did the cell get so small? 70% Water 30% Dissolved Substances 80% H 2 O
    41. 41. The water balance of living cells
    42. 42. The contractile vacuole of Paramecium : an evolutionary adaptation for osmoregulation
    43. 43. REVIEW <ul><li>What part of the cell regulates what goes in and out? </li></ul><ul><li>What are the two components of the cell membrane? </li></ul><ul><li>What are the two types of transport? </li></ul><ul><li>What are the characteristics of passive transport? </li></ul>
    44. 44. MORE REVIEW <ul><li>Explain diffusion. Why does it occur? </li></ul><ul><li>Explain osmosis. Why does it occur? </li></ul><ul><li>Explain facilitated diffusion. </li></ul><ul><li>What is the role of the transport protein in facilitated diffusion? </li></ul>
    45. 45. Even MORE Review! <ul><li>What happens to an animal cell when there are more dissolved substances on the outside of the cell? </li></ul><ul><li>The inside? </li></ul><ul><li>When there are equal amounts? </li></ul>
    46. 46. How is Active Transport different? <ul><li>Active transport requires energy. </li></ul><ul><li>Molecules move from low concentration to high concentration </li></ul><ul><li>Molecules move against concentration gradient. </li></ul>
    47. 47. Review: passive and active transport compared
    48. 48. The sodium-potassium pump Active Transport
    49. 49. An electrogenic pump
    50. 50. Cotransport
    51. 51. Endocytosis <ul><li>Cells bring large in particles using cell membrane </li></ul><ul><ul><li>There are 2 types: </li></ul></ul><ul><ul><ul><li>Phagocytosis </li></ul></ul></ul><ul><ul><ul><li>Pinocytosis </li></ul></ul></ul>
    52. 52. Phagocytosis <ul><li>This is the ingestion of large particles. </li></ul><ul><li>Your white bloods cells also do this. </li></ul>Amoeba
    53. 53. Pinocytosis <ul><li>Tiny pockets form along cell membrane, and pinch off into vacuoles inside the cell . Sometimes called “Cell Drinking” </li></ul>
    54. 54. Exocytosis <ul><li>This is how the cell gets rid of waste. </li></ul>
    55. 55. The three types of endocytosis in animal cells
    56. 56. REVIEW <ul><li>How is Active transport different from passive? </li></ul><ul><li>What part of the cell is used to bring in particles? </li></ul><ul><li>How does a cell (including white blood cells) take in LARGE particles? </li></ul><ul><li>How does a cell take in small or liquid particles? </li></ul>
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