1. During the resting state of a neuron, the axonal membrane is characterized by:
A) High permeability to $Na^{+}$ and low permeability to $K^{+}$B) Equal permeability to both $Na^{+}$ and $K^{+}$C) Comparatively more permeable to $K^{+}$ and nearly impermeable to $Na^{+}$D) Impermeable to both $Na^{+}$ and $K^{+}$
✓ Correct Answer: Option C
Explanation: <b>Solution:</b><br> In a resting neuron, the membrane is more permeable to potassium ions ($K^{+}$) and nearly impermeable to sodium ions ($Na^{+}$). This selectively permeable nature, maintained by the $Na^{+}-K^{+}$ pump (moving $3 Na^{+}$ out and $2 K^{+}$ in), establishes the resting membrane potential of approximately -70 mV.