1) what is concentration gradiant? a) movement from high concentration to low concentration b) movement from low to high concentration c) volume of the particles 2) lower temperature increases the rate of diffusion  a) yes b) no 3) which particle diffuses faster? a) liquid b) solid c) gas 4) cell membrane allow substances to pass through, this is called : a) permeable b) transparent c) flexible 5) cell respiration provides your body with energy by transferring: a) oxygen and glucose from cells to blood vessels b) oxygen from cells c) oxygen and carbon dioxide from blood vessels to cells d) oxygen and glucose from vessels to cells 6) large surface area allows more particles to diffuse? a) true b) false

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