Osmosis and Tonicity Osmosis & Ticity Watch on YouTube 2 3 Return Tonicity describes relative solute concentrations across a membrane and osmosis describes the direction that water diffuses due to tonicity differences. True False The liquid contents of a cell contain solutes. True False Pure water contains solutes. True False Submit D

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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.