Active Transport

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  • Active Transport
    • Movement of cells from low concentration to high concentration across a partially permeable membrane
    • Uses energy from cellular respiration
    • Examples
      • Root hair cells absorb mineral ions from dilute solutions in soil
      • Glucose reabsorbed in kidney tubules
    • Transport proteins
      • Use energy to rotate to face out of the cell, pick up a useful molecule, then rotate back into the cell and put it there.

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