You are studying Protein X, which is a tetramer whose function is to bind glucose. You have found a molecule that is an allosteric effector of the protein’s activity.  This means that:     a. The molecule causes Protein X to bind O2 very tightly b. The molecule does not bind in the active site but affects the function of the protein c. The molecule is highly negatively charged d. The molecule binds in the same site as glucose

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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.