24. An investigator examines voltages resulting from changes in membrane permeabilities. If the cell membrane suddenly had 100 potassium channels per square micron open and the number of leak channels were about 1 per square micron, they would drive the cell to what voltage value

Question

Biology

Noelle Hayes

21 January, 14:28

24. An investigator examines voltages resulting from changes in membrane permeabilities. If the cell membrane suddenly had 100 potassium channels per square micron open and the number of leak channels were about 1 per square micron, they would drive the cell to what voltage value

+1

Answers (1)

Know the Answer?

Ellis Blackburn · Answer 1

Generally, K + ions ensures re-polarization of the membrane potential. It always ensures that the neuron returns its resting state, protecting the neurons and ensuring episode of rest before the next action potential.

K + does this by leaving the axon, making the inner layer more negative. This is resting membrane potential. Because there are many K + channels for leakages out of the neuronal axons.

Therefore, in this scenario, he neuron will return to its resting membrane potential state which between values - 50 to - 75mV.

Therefore the value of the potential will be - 60mV, or within the range of - 50 to - 60mV. This is because the neuron is is non - excitable.