cell transport systems 0.0 / 5 ? BiologyCells, tissues and organsIGCSEEdexcel Created by: vanessaCreated on: 16-12-13 12:16 what is the definition of diffusion the movement of molecules from high to low concentration 1 of 11 four factors affecting diffusion? distance, gradient, temperature, surface area 2 of 11 where does diffusion take place / two examples only liquids and gases (i.e. alveoli and villi) 3 of 11 definition of osmosis? movement of water from a high water potential to a low water potential 4 of 11 what does osmosis need semi-permeable membrane 5 of 11 four names of osmosis in plant and animal cells flacid, turgid, crenated and swell 6 of 11 four experiments for osmosis salty egg, potato and visking tube and the treakle 7 of 11 how does water get from the roots into the rest of the plant roots, across cortex, into the xylem 8 of 11 what is the definition of active transport process of molecules moving across a cell membrane from low concentration to high concentration 9 of 11 what does active transport need? input of energy 10 of 11 what is two examples of active transport nitrates in root cells and digestion of food 11 of 11
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