Both simple dufusion and facilitated diffusion of small polar uncharged molecule Select one: O A. all of the choices O B. require the hydrolysis of ATP O C. occur down a concentration gradient (downhill) O D. require carrier proteins

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Q: Explain the difference between simple and facilitated diffusion.

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Q: Facilitated diffusion is a metabolically inexpensive process. O True O False

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Q: What type of energy helps drive the passive processes of diffusion, osmosis, and facilitated…

A: Diffusion and osmosis and facilitated diffusion are all passive processes that rely on molecules…

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.