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Diffusion, Osmosis & Active Transport

Diffusion, Osmosis & Active Transport. Diffusion Movement of particles From a region of higher concentration To a region of lower concentration Down a concentration gradient (no need membrane) Eg . Movement of oxygen into amoeba. Osmosis Movement of water molecules

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Diffusion, Osmosis & Active Transport

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  1. Diffusion, Osmosis & Active Transport

  2. Diffusion • Movement of particles • From a region of higher concentration • To a region of lower concentration • Down a concentration gradient • (no need membrane) • Eg. Movement of oxygen into amoeba • Osmosis • Movement of water molecules • From a region of higher water potential • To a region of lower water potential • Across a selectively permeable membrane • Eg. Movement of water into root hair cells • Active Transport • Movement of particles • From a region of lower concentration • To a region of higher concentration • against a concentration gradient • Eg. Movement of mineral salts into root hair cell in infertile soil

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