Describe ONE modification that could happen to the phospholipids in a membrane that would increase the permeability of the membrane to small non-polar molecules such as oxygen gas. Explain why this modification would increase membrane permeability.

Q: Explain what effect an increase in the thickness of the plasma membrane would have on the rate of…

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Q: Consider a solute having a permeability coefficient of 10-6 m s-1 for the plasma membrane of a…

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Q: What is receptor-mediated transport? Explain.

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A: Hydrophilic means strong attraction towards water or attached to water.

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Q: what is the Role of cholesterol in membrane fluidity?

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Q: magine that a cell has a plasma membrane made ONLY of phospholipids and contains no proteins.…

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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.