In an unstimulated neuron, the plasma membrane is most permeable to ions. A) sodium (Na⁺) B) sugar C) chloride (Cl^?) D) calcium (Ca²⁺) E) potassium (K⁺)

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In an unstimulated neuron, the plasma membrane is most permeable to potassium (K+) ions. This is because there are more potassium channels that are open in the resting state, allowing potassium ions to move more freely across the membrane compared to other ions.

In an Unstimulated Neuron, the Plasma Membrane Is Most Permeable