Term
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Definition
| a way to get things in and out of the cell without using energy |
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Term
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Definition
| movement of molecules from a higher concentration to a lower concentration |
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Term
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Definition
| difference in the concentration of molecules across a distance |
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Term
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Definition
| the concentration of molecules will be the same throughout the space the molecules ocupy |
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Term
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Definition
| the process by which molecules diffuse across a cell membrane from an area of higher concentration to lower concentration |
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Term
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Definition
| the concentration of solute molecules is lower outside the cell then the concentration inside the cytosol |
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Term
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Definition
| when the concentration of solute molecules is greater out the cytosol then in the cytosol |
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Term
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Definition
| the concentration of solutes in and out of the cell are equal |
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Term
Contractile Vacuole
(active transport) |
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Definition
| organelles that remove excess water |
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Term
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Definition
pressure that molecules exert against the cell wall |
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Term
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Definition
| when the water leaves the cells through osmosis (hypertonic) |
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Term
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Definition
water diffuses into the cells causing them to swell and burst
(hypotonic environment) |
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Term
Facilitated diffusion
(passive transport) |
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Definition
| process used for molecules that can't readily diffuse through cell membranes (non soluble molecules) |
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Term
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Definition
| assists specific cells to get across the membrane ( high to low concentration) |
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Term
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Definition
| transport ions from high to low concentrations |
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Term
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Definition
cells move from an area of lower concentration to higher, up concentration gradient
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Term
sodium-potassium pump
(active) |
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Definition
| transports sodium out of the cell and potassium in |
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Term
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Definition
| process by which cells ingest external fluid, macromolecules and large particles |
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Term
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Definition
| the pouch that pinches off the cell membrane and becomes a membrane-bound orgenelle. fuses with lyosomes |
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Term
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Definition
| transports solutes or fluids |
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Term
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Definition
| transports large particles or whole cells |
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Term
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Definition
| process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface |
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