Q5.8. In a neuron with a V m of 0, there is a high concentration of K + inside o
ID: 3476067 • Letter: Q
Question
Q5.8. In a neuron with a Vm of 0, there is a high concentration of K+ inside of the cell and a low concentration outside. Which statement below is TRUE?
If K+ channels were open and the electrical forces were absent, diffusion would result in a net movement of K+ out of the cell.If K+ channels were closed, Na+ would flow into the neuron.If K+ channels were open and the effect of diffusion was absent, the electrical forces would move K+out of the cell.The membrane potential would be at the K+ equilibrium potential, because concentrations of K+ are not balanced.
Explanation / Answer
The resting membrane potential of a neuron is zero. There is a high concentration of potassium ions inside the cell than the outside. Therefore, in this condition, the true statement is, if the K+ channels were open and the electrical forces were absent, diffusion would result in net movement of K+ out of the cell. This movement of K+ ions occur along the concentration gradient.
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