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Which of the following is a true statement about osmosis? A. Osmosis is diffusion of sugar molecules across a membrane. B. Osmosis is diffusion of water molecules across a membrane. C. Osmosis is diffusion in plants cells. D. Osmosis is diffusion in animal cells.



Answer :

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b, because
  osmosis is the process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.
 or in easier terms  diffusion of water
B because osmosis is the process that doesn't require energy. Sugar molecules have nothing to do with it and neither does the type of membrane

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