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Suppose that the concentration of K outside the cell is 10 and inside the cell is 10 mmol/liter. The Nernst equation at 20oC is: You set the membrane voltage at 58 millivolts using a voltage clamp, and measure membrane current. If K is the only ion crossing the membrane, you would expect to see:

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ajeigbeibraheem

Answer:

0 current

Explanation:

Let solve the Nernst equation for K+ by using the formula:

[tex]E = \dfrac{58}{z}\times \bigg[ log_{10} \dfrac{[Ion]_{out}}{[Ion]_{in}} \bigg][/tex]

[tex]E = \dfrac{58}{1}\times \bigg[ log_{10} \dfrac{10}{10} \bigg][/tex]

E = 58 × 0

E = 0

Thus, since the membrane voltage is zero to the ion's equilibrium potential, there will be no net flow of the ions from one side of the membrane to the other, and we will observe a 0 current.

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