What is the main role of the sodium-potassium pump in a neuron?
Answer and explanation
Correct answer: A. It moves three Na⁺ out and two K⁺ in, keeping the resting potential
- Step 1: The pump uses ATP. Step 2. It exports and imports per cycle. Answer: three Na⁺ out and two K⁺ in. Why not the others: the numbers are reversed or the process is passive.
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