What maintains the ionic gradients across the resting membrane of a neuron?
What maintains the ionic gradients across the resting membrane of a neuron?
Sodium-potassium pump
Sodium-potassium exchanger
Sodium-protein pump
Potassium-protein exchanger
Solution
The ionic gradients across the resting membrane are maintained by the active transport of ions by the sodium-potassium pump which transports 3 Na⁺ outwards for 2 K⁺ into the cell.