A substance moving down the concentration gradient is an example of active transport.
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Q65: The phospholipid bilayer forms spontaneously in water.
Q66: Facilitated diffusion occurs down a concentration gradient.
Q67: Osmosis refers to the diffusion of _
Q68: A cell wall stops a plant cell
Q69: Osmosis is an example of passive transport.
Q71: Phagocytosis is an example of passive transport.
Q72: Exocytosis is an example of active transport
Q73: Diffusion occurs because of random molecular movement.
Q74: Water moves freely through a semipermeable membrane.
Q75: Facilitated diffusion occurs through membrane-bound transport proteins.
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