BIO 365R Answers_Homework 2

BIO 365R Answers_Homework 2 - = 58 log 8.45 = -72.64 mV 10...

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Intra (mM) Extra (mM) Na + 10 145 K + 140 5 Cl - 20 110 1) What is the membrane potential if the cell is equally permeable to all three ions? V m = 58 log 145 +5+20 = 58 log 170 = -10.7 mV 10+140+110 260 2) What is the membrane potential if the cell is 10x les permeable to Cl - and 100X less permeable to Na + than to K + ? V m = 58 log 145 (.01) +5+20 (.1)
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Unformatted text preview: = 58 log 8.45 = -72.64 mV 10 (.01)+140+110 (.1) 151 3) What is the membrane potential if the cell is 100x les permeable to Cl-and 100X less permeable to K + than to Na + ? V m = 58 log 145 +5 (.01)+20 (.01) = 58 log 145.25 = 61.78 mV 10 +140 (.01)+110 (.01) 12.5...
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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.

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