Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an ___________ process?

Correct answer: A. Active

  • A. Active
  • B. Passive
  • C. Diffusional
  • D. None of these.

Explanation

The sodium-potassium pump uses ATP to move 3 Na+ out of the neuron and 2 K+ into it, both against their concentration gradients. Because energy is required for this movement, it is active transport. The likely alternative is passive or diffusional transport, which applies to ion movement through channels down a gradient, not to the pump.

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