Question

The amphipathie antibiotic, Valinomycin, is capable of facilitating diffusion of potassium ions because it can effectively replace the solvation shell of the ion while being able to diffuse through the plasma membrane. What would happen if all of the potassium ion channels were blocked and then valinomycin was added to the cells immediately after? Consider that the experiment is performed on neurons in the resting state and other ion channels are intact. U K would be transported inside the neuron, which would increase its resting potential. UDK would be transported from the neuron, which would increase the resting potential O K would be transported inside the neuron, which would decrease its resting potential. k wouldn't be transported in any direction; thus, no change in the resting potential would be observed.

Answer 1

Answer will be option C

As increase in K+ ions inside the cells of neuron then K+ concentration will be greater than Na+ ion concentration which is done by Na-K pump which is pumping 3 Na+ out and take 2K+ ion in so overall K + ions increases inside and hence more positive charge develop inside than out side which cause generation of action potential.

So it will decrease resting potential.

Hope it's clear..thanks