4 2 Active Transport
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4 2 Active Transport

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    4 2 Active Transport 4 2 Active Transport Presentation Transcript

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