Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na+-glucose symporter. Recall that the Na+ concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na+ ions into the cell to the "uphill" transport of glucose into the cell. If the Na* concentration outside the cell ([Na*lout) is 149 mM and that inside the cell ([Na*]in) is 21.0 mM, and the cell potential is –54.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. kJ What is the maximum ratio of [glucose];n [glucose]out AGgluc = mol that could theoretically be produced if the energy coupling were 100% efficient? 3.5 x 10–4 7.96 2900 1.13 O O O

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Assume the following concentration values (in millimolar) have been calculated for a d) human being's (warm-blooded) muscle cell: [K*]in= 145 ; [Na*Jin = 71 ; [CI"]in = 49 GK = 0.68 µS, GNa = 0.22 µS, Gci = 0.38 µS [K*]out = 13 ; [Na*]out = 359 ; [CI]out = 329 ; Calculate the resting potential of the cell?

Hi! I found some answers for this question but I am not sure about it.Can you explain the question?

synthetic ion exchange resins. These resins are organic polymeric networks that contain functional groups that are permanently attached to the resin. One such functional group is sulfonic acid, -SO3H. When placed in water, the resin (being a large organic molecule) will not dissolve. However, the ionic functional groups become hydrated and the resin will swell as it takes up waters of hydration. The resin may then be thought of as a solid solution mixture with the functional groups being "dissolved" but the polymer remaining as a solid. The hydronium ion (H3O+) associated with acidic functional groups like sulfonic acid will dissociate just as it would if the acid were free of the resin. If other cations such as Cu2+ or Na+ are added to the resin, an ion-exchange reaction can occur:  . Note that one H+ is released for each positive charge bound to the resin.  Since the resin exchanges a hydrogen ion for a sodium ion in this reaction, sulfonic acid resins are called cation-exchange…

physical chemistry Roughly, what is the error introduced by the solution of some of the CO2 in the water in the bomb? The solubility of CO2 is about 0.0015 g/mL at 25°C and 1 atm CO2 pressure. The heat of solution of CO2 in a dilute aqueous solution is roughly -19.4 kJ/mol. Assume that the final CO2 pressure is 2 atm and that Henry's Law applies.

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You are given a 50 ml solution of NADH having an A340nm of 0.31. What is the concentration of this solution in micromoles (uM) if ɛ340nm of NADH = 6200 litre.mol-cm-1? Select one: O a. 0.2 O b. 2 О с. 20 O d. 50 О е. 5 Clear my choice

B) Assume you incubate 10 ml of a solution containing 0.15 M G6P overnight at 25°C with the enzyme phosphoglucose isomerase. How many millimoles of F6P will be in the 10 ml solution the next morning?

Calculate four values for the oxygen binding to hemoglobin. Assume the following set of variables: