Question

what happens to ion distribution at resting potential?
na+ actively pumped in
both ions equal on both sides
na+ high inside, k+ high outside
na+ high outside, k+ high inside

Explanation:

The resting membrane potential of a neuron is maintained by ion distribution. Sodium ions ($\text{Na}^+$) are actively pumped out (not in) and are more concentrated outside the cell, while potassium ions ($\text{K}^+$) are more concentrated inside the cell. The first option is wrong as $\text{Na}^+$ is pumped out. The second is wrong as ions aren't equal. The third is wrong as it reverses the distributions. The fourth option correctly states $\text{Na}^+$ is high outside and $\text{K}^+$ is high inside.

Answer:

The Right Graph (the fourth option: $\text{Na}^+$ high outside, $\text{K}^+$ high inside)