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| boundary of cell that regulates what enters and leaves |
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| molecule that makes up the majority of the membrane; has a polar head and 2 nonpolar tails |
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| movement of molecules from areas of high concentration to areas of low concentration |
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| movement of water molecules from areas of high water concentration (or low solute concentration) to areas of low water concentration (or high solute concentration) |
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| diffusion aided by a protein located in the plasma membrane |
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| transport that requires no energy; diffusion, osmosis, facilitated diffusion |
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| transport that requires energy (moves molecules from areas of low concentration to high concentration) |
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| solution with a higher concentration of solute |
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| solution with a lower concentration of solute |
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| solutions with an equal concentration of solute |
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| process where a vescile fuses with the membrane, releasing its contents outside the cell |
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| process where a vescile fuses with the membrane, releasing its contents into the cell |
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| small membrane-bound sacs that are used for transporting materials like proteins |
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