Suppose a biological membrane with a specific capacitance of 1 μF/cm^2 has a resting surface charge density of 0.1 μC/cm^2. Also suppose there are 50 sodium channels per μm^2 and thatwhen each opens for 1 ms, 1000 Na+ ions flow through the channel, resulting in a reduction of the potential difference (the membrane voltage). Compare this membrane’s resting potentialvoltage to the membrane voltage 1 ms after 10% of these channels open, assuming no other changes occur during this time.
Suppose a biological membrane with a specific capacitance of 1 μF/cm^2 has a resting surface charge density of 0.1 μC/cm^2. Also suppose there are 50 sodium channels per μm^2 and thatwhen each opens for 1 ms, 1000 Na+ ions flow through the channel, resulting in a reduction of the potential difference (the membrane voltage). Compare this membrane’s resting potentialvoltage to the membrane voltage 1 ms after 10% of these channels open, assuming no other changes occur during this time.
Physics for Scientists and Engineers, Technology Update (No access codes included)
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ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
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Chapter26: Capacitance And Dielectrics
Section: Chapter Questions
Problem 26.12OQ: (i) Rank the following five capacitors from greatest to smallest capacitance, noting any cases of...
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Suppose a biological membrane with a specific capacitance of 1 μF/cm^2 has a resting surface charge density of 0.1 μC/cm^2. Also suppose there are 50 sodium channels per μm^2 and that
when each opens for 1 ms, 1000 Na+ ions flow through the channel, resulting in a reduction of the potential difference (the membrane voltage). Compare this membrane’s resting potential
voltage to the membrane voltage 1 ms after 10% of these channels open, assuming no other changes occur during this time.
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