MM less than 10 42mol (uooo0+2 mo.s +.0.15 ic 00 mls 500MIS А "A" and "B" are 2 compartments separated by a lipid based membrane operating like a cell membrane. Suppose that in the membrane there are pores or channels of various sorts: -one allows particles through regardless of their charge if the molecular weight is less than 40 one works by facilitated diffusion to transport glucose -one allows passage of cations medium sized (up to M.W. 2000), but blocks anions. At the start of the experiment, both compartments are 2 filled with distilled water (500 mls each side). To side A, we add 2 mol of albumin (MW> 60,000) To side B, we add 2 mol of the salt NaCI, 1 mol glucose, 0.25 mol cholesterol and 0.25 mol bicarbonate ions (H€O3) The system is gently stirred for the duration of the experiment. The system is allowed to "shift around" until all the solutes have reached their equilibrium. Describe the equilibrium state, in terms of concentration changes for each solute and any water level changes Describe amounts in relative terms/fractions. Give a rationale for each statement. (albumin is a protein in the blood) (M.W. molecular weight sum of the atomic weights of the parts of the molecule- see appendix E) 11 (assumptions: HCO3 does not dissociate further.) B

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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.