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the process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out
the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell
the process by which molecules move from an area of higher concentration to an area of lower concentration
Requiring no cellular energy , this type of diffusion helps move large molecules across the cell membrane through transport proteins found in the cell membrane
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