• Water • Sugar permeable membrane Assuming the membrane is permeable to BOTH sugar and water, meaning that both water and sugar are able to move through the membrane, which way will water go? Which way will sugar go? Sugar left, water right. O Sugar left, water won't move. Sugar right, water left. Sugar won't move, water moves right. Neither sugar nor water move.

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.