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4 2 Active Transport


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4 2 Active Transport

  1. 1. Using Energy to Move Substances
  2. 2. <ul><li>Uses ATP (ENERGY!!!) </li></ul><ul><li>Moves substances from low to high concentration </li></ul><ul><li>Carrier proteins in cell membrane “PUMP” things in & out (AA’s, Ions, Sugar) </li></ul><ul><ul><li>Many of these important substances have a lower concentration outside the cell, so what would typically happen to them? </li></ul></ul>
  3. 5. <ul><li>What can stop </li></ul><ul><li>this? </li></ul>
  4. 6. Na-K Pump K Ions Na Ions Pumps 3 Pumps 2 OUT of cell INTO cell
  5. 7. <ul><li>Prevents Na build-up in cell (toxic) </li></ul><ul><ul><li>Enter on their own via facilitated diffusion </li></ul></ul><ul><ul><li>Makes cell hypertonic </li></ul></ul><ul><ul><li>Cell would gain water & lyse </li></ul></ul><ul><li>Helps Glucose enter cell ( Coupled Channel ) </li></ul>