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OpenStudy (anonymous):

in which direction does water move across membranes,up or down concentration gradient? define isotonic and hypertonic and hypotonic

OpenStudy (callisto):

Please post it in the Biology group, where you are more likely to be able to find some biology experts to help you! Thanks! http://openstudy.com/study#/groups/Biology

OpenStudy (anonymous):

how do i do it?

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