What is the likely identity of these membrane associated proteins: (a) a protein that is released from a membrane treated with a high salt solution, which causes disruption of ionic linkages; (b) a protein that is not released from the membrane upon its exposure to a high salt solution alone, but is released when the membrane is incubated with an enzyme that cleaves phosphate glycerol bonds and covalent linkages are disrupted; (c) a protein that is not released from the membrane upon exposure to a high salt solution, but is released after the addition of the detergent sodium dodecylsulfate (SDS). Will the activity of the protein released in part (c) be preserved following its release?

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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.