A scientist compares the plasma membrane compositionof an animal from the Mediterranean coast with one fromthe Mojave Desert. Which hypothesis is most likely to becorrect?a. The cells from the Mediterranean coast animal willhave more fluid plasma membranes.b. The cells from the Mojave Desert animal will have ahigher cholesterol concentration in the plasmamembranes.c. The cells’ plasma membranes will beindistinguishable.d. The cells from the Mediterranean coast animal willhave a higher glycoprotein content, while the cellsfrom the Mojave Desert animal will have a higherlipoprotein content.

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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.