The resting membrane potential is not exactly equal to the Nernst potential for potassium because:

The resting membrane potential is not exactly equal to the Nernst potential for potassium because:

The resting membrane potential is not exactly equal to the Nernst potential for potassium because:



  1. the Nernst equation is not able to predict potentials that precisely.
  2. rapid fluctuations in membrane potential prevent accurate measurements.
  3. the membrane has some resting permeability to species other than potassium.
  4. potassium does not contribute to the resting membrane potential.
  5. All of the above
Answer: 3