Term
| selectively permeable membrane |
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Definition
| membrane allowing certain materials in and out of the cell depending on size of material and size of pores |
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Definition
| movement of molecules from an area of high concentration to an area of low concentration (i.e. perfume, riding bike DOWN hill) |
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Definition
| state in which molecules of a substance are spread evenly on either side of the membrane (i.e. sugar cube dissolving in water) |
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Definition
| diffusion of water through a cell membrane (i.e. egg in vinegar) |
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Definition
| the process required when materials need energy to be moved across a cell membrane (i.e. large molecules must fit through, or materials move from low -> high concentration) |
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Definition
| process by which no energy is needed to move material across cell membrane and it just happens naturally (i.e. diffusion, osmosis, facilitated diffusion) |
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Definition
| occurs when transport proteins help move larger molecules such as glucose in/out of cell |
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Term
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Definition
| proteins that help move larger molecules across cell membrane |
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