Please answer question 9 8. The Henry\'s law constant of oxygen in w ater at 25

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Please answer question 9

8. The Henry's law constant of oxygen in w ater at 25 °C is 773 atm mol' kg of water. Calculate the molality of oxygen in water under that the solubility of oxygen in blood at 37 °C is roughly the same as that in water at °C, a partial pressure of 0.20 atm. Assume 25 comment on the prospect for our survival without hemoglobin molecules. The total volume of blood in the human body is about 5 L 9. The potential difference across a cell membrane is found to be 40 mV, with the inside negative to the outside. Assume an equilibrium distribution, and calculate the concentration ratio CMg(out)/CMg(in) for Mg2+ ions, T-37C.

Explanation / Answer

the potential difference across a cell membrane is found to be 40mV,with the inside negative to be outside. extracellular conectration of K is very important in determining the resting membrane potential and the rate at which K diffuses out of cells, changes in the concentration of this ion can have drastic consequences. lets assume that we have two side of the one is Mg. There are positively charged ions called cations (e.g., Na+, K+, Mg2+, Ca2+) and negatively charged ions called anions (e.g., Cl- and proteins that act as anions).the pump continues to move Mg out of the cell even when more Mg ions are present there.   In other words, Mg is being pumped against their concentration gradients.Because this pump is moving ions against their concentration gradients it requires energy

Ion pumps influence the action potential only by establishing the relative ratio of intracellular and extracellular ion concentrations. The action potential involves mainly the opening and closing of ion channels not ion pumps. If the ion pumps are turned off by removing their energy source, or by adding an inhibitor such as ouabain, the axon can still fire hundreds of thousands of action potentials before their amplitudes begin to decay significantly.[9] In particular, ion pumps play no significant role in the repolarization of the membrane after an action potential

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