Movement in and out of cells
DIFFUSION: Is the net movement of moleculles and ions from a region of their higher concentration to a region of their lower concetration, dorn a CONCENTRATION GRADIENT, as a result of their random movement.
OSMOSIS: the diffusion of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane.
ACTIVE TRANSPORT: the movement of molecules and ions in or out of a cell through the cell membrane against a concentration gradient, using energy from respiration.
OSMOSIS: the diffusion of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane.
ACTIVE TRANSPORT: the movement of molecules and ions in or out of a cell through the cell membrane against a concentration gradient, using energy from respiration.
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