A Neuron from an Extraterrestrial Being Has the Intracellular and Extracellular

question 2

Multiple Choice

A neuron from an extraterrestrial being has the intracellular and extracellular sodium and potassium concentrations shown in the table (in millimolars) . During resting conditions, sodium conductance is 100 fold greater compared with potassium conductance. Which of the following (in millivolts) best describes the resting membrane potential in this alien neuron?
(Assume that membrane potential is dictated mainly by sodium and potassium conductances and that the Nernst equation applies.)

• A)+150
• B)+55
• C)0
• D)?55
• E)?150

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