(ECF) of Na" = 142 mM, and K4.6 mM (ICF) of Na = 9 mM and K = 155 mM The membrane has eight (8) times more K" leak channels than Na'leak channels. 1. What is the resting membrane potential for this cell?

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Answer questions 1-5 about a cell that has:
[ECF) of Na" = 142 mM, and K* = 4.6 mM
(ICF] af Na* = 9 mM and K* = 155 mM
The membrane has eight (8) times more K leak channels than Na*leak channels.
1. What is the resting membrane potential for this cell?
2. What would the resting membrane potential be if a drug was administered that blacked Na" leak channels?
3. To what would the membrane potential change if a stimulus apened an amount of Na* gated channels that was
500 times greater than the number af Na* leak channels?
4. What would be the direction of the Na* electrochemical gradient if the membrane potential were 80 mV?
Into cell
Out of cell
5. How much mare permeable would the above cell be to patassium than sodium if the measured resting
membrane potential was -68 mv?
Transcribed Image Text:Answer questions 1-5 about a cell that has: [ECF) of Na" = 142 mM, and K* = 4.6 mM (ICF] af Na* = 9 mM and K* = 155 mM The membrane has eight (8) times more K leak channels than Na*leak channels. 1. What is the resting membrane potential for this cell? 2. What would the resting membrane potential be if a drug was administered that blacked Na" leak channels? 3. To what would the membrane potential change if a stimulus apened an amount of Na* gated channels that was 500 times greater than the number af Na* leak channels? 4. What would be the direction of the Na* electrochemical gradient if the membrane potential were 80 mV? Into cell Out of cell 5. How much mare permeable would the above cell be to patassium than sodium if the measured resting membrane potential was -68 mv?
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