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The potassium equilibrium potential is -94 mV. What does this mean?

A) At -94 mV, the chemical force for potassium movement is zero.

B) At -94 mV, the chemical force for potassium movement is opposed exactly by the electrical force.

C) At -94 mV, the electrical force for potassium movement is zero.

D) At the resting membrane potential of neurons, potassium is at equilibrium.

E) At -94 mV, potassium movement is opposed exactly by sodium movement.

Answer :

Final answer:

The potassium equilibrium potential of -94 mV means that at this voltage, the electrical force for potassium movement is opposed exactly by the chemical force.

Explanation:

The potassium equilibrium potential of -94 mV refers to the voltage at which the electrical force for potassium movement is opposed exactly by the chemical force. This means that at -94 mV, there is no net movement of potassium ions across the cell membrane. It does not mean that the electrical force or the chemical force is zero, but rather they are balanced.

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