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Unformatted text preview: 4) If the membrane were solely permeable to Cl-, the membrane potential would be: E cl = 58/-1 log [Cl out ]/ [Cl in ] or -58 log (300/400) or -58 log (0.75) = 7.24 mV 5) If the membrane were permeable to BOTH Na + and K + but is 10x more permeable to Na + than K + . E m = 58 log [(10)200 + 20] / [(10)200 + 200] = 58 log 2020/ 2200 = 58 log (0.91) = -2.1 mV (here E m refers to the membrane potential as it is no longer determined by the equilibrium potential for a single ion)....
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This note was uploaded on 04/12/2009 for the course BIO 51340 taught by Professor Zakon during the Spring '09 term at University of Texas at Austin.
- Spring '09