The image below shows the movement of molecules across a plasma membrane. extracellular space lipid bilayer (cell membrane) TIMEI Source: LadyofHats small hydrophobic molecules intracellular space Using the image above, answer the following questions. (a) Identify the type of cell transport that is occurring in the image and justify your answer. (b) Explain the fluid mosaic model of the cell membrane as it relates to the movement of mole- cules illustrated in the figure. (c) Predict the difference you would expect to see in the movement of illustrated molecules if they were to represent hydrophilic molecules rather than hydrophobic molecules. Justify your answer.

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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.