Section6

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Section6

  1. 1. Cellular Transport Biology I Factoids
  2. 2. Factoid 65 <ul><li>The cell membrane is selectively permeable. That means some stuff can enter and some stuff can leave. </li></ul>
  3. 3. Factoid 66 <ul><li>The phospholipid head is hydrophilic (water loving) and the phospholipid tail is hydrophobic (water hating). </li></ul>
  4. 4. Factoid 67 <ul><li>Passive transport does not require energy and moves stuff from a high concentration to a low concentration, but active transport does require energy and it moves stuff from a low concentration to a high concentration. </li></ul>
  5. 5. Factoid 68 <ul><li>The three types of passive transport is simple diffusion, facilitated diffusion, and osmosis. </li></ul>
  6. 6. Factoid 69 <ul><li>Active transport includes exocytosis (big stuff leaving the cell), endocytosis (big stuff entering the cell), and various pumps. </li></ul>
  7. 7. Factoid 70 <ul><li>When molecules on both sides of the membrane move in both directions, the system has reached equilibrium. </li></ul>
  8. 8. Factoid 71 <ul><li>Simple diffusion involves the movement of molecules from a high concentration to a low concentration. It can be any substance. </li></ul>
  9. 9. Factoid 72 <ul><li>Facilitated diffusion is the movement of molecules through a channel protein from high concentration to low concentration. </li></ul>
  10. 10. Factoid 73 <ul><li>Osmosis is the movement of water from high concentration to low concentration. </li></ul>
  11. 11. Factoid 74 <ul><li>A cell placed in a hypotonic solution will swell. A cell in a hypertonic solution will shrink. A cell in an isotonic solution will stay the same. </li></ul>

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