A group of BS Biology students were tasked to design and fabricate different synthetic cell membranes that could be used to simulate cellular activities of certain organisms. Below are the chemical structures of the compounds that are available to them: H2C-OH НС — ОН Но H2Č-OH myristic acid glycerol HO alpha-linolenic acid HO-P-0 OH orthophosphate HO NH2 sphingosine OH CH2OH NH3 CH2OH но ethanolamine HO. OH Но HO lactose ("point of attachment) Given these compounds, help the students assemble the structure of the lipid constituent for the cell membrane appropriate to study the following. Briefly explain your answer. (Draw the structure) a. a thermophilic bacteria thriving in a hot spring b. a hepatocyte of a sea lion in the Arctic Ocean С. a frog neurocyte

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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.