Untitled video

GS
by Gracelyn Sims1 view·Updated Oct 5, 2021

Chapters

Audio TranscriptAuto-generated

  1. Okay today for my presentation I have chosen passive transport.
  2. So passive transport in my opinion is the simplest, out
  3. of all the different types of cell transport.
  4. And basically passive transport requires no energy and moves from
  5. a high to low concentration.
  6. So there are three different types of passive transfer.
  7. Simple facilitated and osmosis.
  8. And I'm fixing to show you describe each one of
  9. them and show you how they work.
  10. So the first one we have is simple diffusion.
  11. Simple diffusion is where the molecules are moving from a
  12. high to low.
  13. That's as simple as it is.
  14. You know, it's as simple as that of all three
  15. in my opinion.
  16. Um And so one cell that uses simple diffusion is
  17. bacteria. So in this picture I must show you this
  18. picture is just showing you simple diffusion.
  19. So as you see the molecules, the top they're all
  20. very densely packed and then the extra cellular few it
  21. fluid. So basically they're going to they're trying to get
  22. to the cytoplasm which is has a lower concentration.
  23. So to do that they have to they started at
  24. the top and they go through the lipid bi layer
  25. which is also known as the plasma membrane.
  26. So they go through there and then they get put
  27. in the lower concentration inside a place.
  28. Um So that's basically how simple diffusion works.
  29. Not too complicated and pretty easy.
  30. Next we have facilitated diffusion which is a little like
  31. um simple, just mm more, not too much more.
  32. Just different.
  33. So facilitated diffusion uses proteins to move from how to
  34. love. So for example, one um cell that uses carbon
  35. that he says uh facilitated diffusion is carbohydrates.
  36. So in this picture um it's showing the ion channels
  37. and islands are actually another thing that uh use facilitated
  38. diffusion. But so as you see in the cell membrane
  39. there are these big old green things which are the
  40. carrier proteins, they're acting like carrier proteins.
  41. And they're just showing how at the top and the
  42. extra cellular space there's a bunch of molecules and they're
  43. going in uh the carrier proteins that carry proteins just
  44. transport molecules in and out of the cell.
  45. So basically the um molecules are trying to go from
  46. higher to lower and do that.
  47. They have to go through the carrier proteins to get
  48. into the intracellular space which is where the lower concentration
  49. is found.
  50. So that is facilitated diffusion.
  51. The next one we have is osmosis.
  52. Which is the last one.
  53. And basically osmosis uses is the movement of molecules from
  54. a solution of high water molecules too low water molecules.
  55. So the only difference is it uses water molecules and
  56. an example of osmosis is red blood cells.
  57. They actually use osmosis in here on the lift, you
  58. can see that we have the modules and they are
  59. densely packed.
  60. And so as you see the arrow points the next
  61. one, they moved through the lipid bi lair to the
  62. other side.
  63. And so now they're not as densely packed.
  64. They moved from a higher to lower, contract.
  65. And that's basically what all these are.
  66. They're just moving from higher.
  67. Lower. They just do it differently.
  68. And so some here's some more examples um for the
  69. different types.
  70. So some more that use simple our auction carbon dioxide
  71. and ethanol, which I thought those were pretty cool, you
  72. know? And then something some things that you use facilitated
  73. our glucose ions, amino acids, those all use facilitated some.
  74. And so there's plenty more of each.
  75. Those are just the ones that I happened to come
  76. across. Okay, so basically what I was trying to show
  77. you is that passive transport is the way cells move
  78. throughout the way molecules move throughout the cell.
  79. They just they can use any of the types depending
  80. on what they are.
  81. And they all work very closely.
  82. They're just each have their own little parts.
  83. So that is what I've did.
  84. My project over