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| the movement of materials across a membrane using cell energy. Materials move from low to high concentration. |
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| ion channel or carrier proteins move substances up the concentration gradient. |
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| a carrier protein that actively transports K + ions into and Na+ ions out of cell |
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| movement of fluid, macromolecules and large particles, including other cells into the cell. |
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| “cell drinking” brings in solutes or fluids |
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| “cell eating” brings in large particles or whole cells |
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| “eating cells” that digest bacteria, viruses which could harm the body |
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| the process of releasing a substance outside the membrane in a vesicle |
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