Question

During the repolarization phase of a neuron, the cell is brought back to the resting potential by the action of a Sodium-Potassium pump. Which one of the following statements is TRUE for the active transport of Na+ and K+ ions through the cell membrane ?

• A. For every 3 Na+ transported out of the cell 2 K+ is transported into the cell.
• B. For every 3 Na+ transported into the cell 2 K+ is transported out of the cell.
• C. For every 2 Na+ transported out of the cell 3 K+ is transported into the cell.
• D. The ratio of Na+ and K+ transport is always equal to one.

Answer 1

Answer: (A)

For every 3 Na+ transported out of the cell 2 K+ is transported into the cell.

Answer 2

The correct option is (A) : For every 3 Na+ transported out of the cell 2 K+ is transported into the cell..