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FACILITATED DIFFUSION

FACILITATED DIFFUSION. Certain ions, amino acids, sugars are too large to squeeze through the membrane or can’t dissolve in the lipid bilayer “to aid” or “facilitate” channel proteins transport proteins. ACTIVE TRANSPORT. Particles move AGAINST the concentration gradient

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FACILITATED DIFFUSION

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  1. FACILITATED DIFFUSION • Certain ions, amino acids, sugars are too large to squeeze through the membrane or can’t dissolve in the lipid bilayer • “to aid” or “facilitate” • channel proteins • transport proteins

  2. ACTIVE TRANSPORT • Particles move AGAINST the concentration gradient • Area of low conc to area of high • requires energy from the cell • shape of carrier protein is modified

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