a. Movement of substances/molecules/particles/ions from a region of high concentration to a
region of low concentration (until equilibrium is reached)
b. Diffusion gradient/concentration gradient
surface area to volume ratio
temperature
size of molecules
state of the diffusing substance
thickness of membrane and tissues
c. Absorption of digested food in intestines
movement of salts in plants
movement of materials between blood capillaries
tissues removal of waste materials from bodies of small organisms
air movement in intercellular spaces in plants
d. To a beaker of water, drop crystals of potassium permanganate or copper sulphate leave to
stand in a place without disturbing observe the spreading of molecules liquid is coloured
uniformly due to diffusion
simiyu kelly answered the question on September 15, 2017 at 11:42
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