Multiple choice

To generate a resting potential, which of the following occurs across the membrane:

  1. Na+ is pumped in + K+ is pumped out via active transport

  2. Na+ is pumped in + K+ is pumped out by facilitated diffusion

  3. Na+ is pumped out + K+ is pumped in via active transport

  4. Na+ is pumped out + K+ is pumped in by facilitated diffusion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sodium-potassium pump maintains the resting potential by actively transporting 3 Na+ ions out of the cell and 2 K+ ions into the cell using ATP.

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