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16 Cards in this Set
- Front
- Back
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cell membrane
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controls what enters and leaves the cell
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phospholipid bilayer
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the major component of the cell membrane
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selectively permeable membrane
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allows certain substances to cross through the membrane more easily than others
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equillibrium
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isotonic substance, when the substances are equally spread out
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diffusion
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movement of particles from a high concentration to a low concentration
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facilitated diffusion
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molecules cross the membrane with the help of protein channels (polar, monomers, an ions)
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osmosis
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the diffusion of water through a selectively permiable membrane
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hypotonic
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less solute outside the cell than inside
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hypertonic
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more solute outside the cell than inside the cell
HYPerTONIC |
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hypotonic
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less solute outside the cell than inside the cell
hyPOTONic |
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isotonic
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equal solute inside and outside of the cell
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active transport
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moving substances from low to high, requires energy (ATP)
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endocytosis
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moving large material into the cell by the menas of membrane infolding solids or liquids
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exocytosis
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release of large materials out of the cell by vesicles merging with cell membrane
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phagocytosis
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type of endocytosis - ingesting solids
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pinocytosis
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type of endocytosis - ingesting liquids
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