Bio Cell Membrane & Transport Quiz: 3 Types of Passive Transport
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4 Terms
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Diffusion
random movement of particles from high to low concentration
diffusion continues until equilibrium is reached
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facilitated diffusion
diffusion of specific particles through transport proteins found in the membrane
Transports larger or charged molecules
Ex. Ion Channel: a transport protein with a polar pore; ions pass through
Ex. Carrier Protein: attach to a molecule on the outside of the cell, transport it across the membrane, release it on the other side
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Osmosis
diffusion of water through a selectively permeable membrane
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