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| the diffusion of water across a selectively permeable membrane |
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| which way does water flow? |
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Definition
| in the direction of the high concentration solute |
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allowing only certain things to diffuse across the membrane |
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| less solute outside of the cell : water will flow into the cell ; refers to a solution with a comparatively lower concentration of solutes to another |
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Definition
| a group of cells that perform a certain function |
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Definition
regulates what enters and leaves the cell; protects/supports the cell -made of a tough, flexible lipid bilayer -many proteins (some with carbs attached) are embedded in the lipid bilayer |
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Definition
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Definition
| a process of molecules moving from an area of high concentration to an area of low concentration (some substances can diffuse across the cell membrane) |
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Definition
| there will be more solute outside of the cell than inside; water will flow out of the cell |
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Definition
| there will be the same amount of solute inside and out of the cell; water will not move across the membrane |
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Definition
| when molecules use special protein channels to cross through a membrane; channels are specific to certain molecules; molecules go from high to low concentration, no energy is needed for this process |
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Definition
when protein channels pump molecules from low to high concentration; energy is needed for this process
eg. sodium to potassium |
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