QuestionJuly 21, 2025

What keeps the resting membrane potential stable? Prompts Sodium-potassium pump Leaky ion channels Voltage-gated channels Calcium channels Allow ions to pass freely. Open only during action potentials. Triggers action potentials Maintains ion concentrations. Not primarily involved in resting state. Select match

What keeps the resting membrane potential stable? Prompts Sodium-potassium pump Leaky ion channels Voltage-gated channels Calcium channels Allow ions to pass freely. Open only during action potentials. Triggers action potentials Maintains ion concentrations. Not primarily involved in resting state. Select match
What keeps the resting membrane potential stable? Prompts Sodium-potassium pump Leaky ion channels Voltage-gated channels Calcium channels Allow ions to pass freely. Open only during action potentials. Triggers action potentials Maintains ion concentrations. Not primarily involved in resting state. Select match

Solution
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Answer

Sodium-potassium pump: Maintains ion concentrations. ### Leaky ion channels: Allow ions to pass freely. Explanation 1. Identify Key Components The resting membrane potential is primarily maintained by the **sodium-potassium pump** and **leaky ion channels**. 2. Sodium-Potassium Pump Function The **sodium-potassium pump** maintains ion concentrations by actively transporting 3 Na⁺ ions out and 2 K⁺ ions into the cell, using ATP. 3. Leaky Ion Channels Role **Leaky ion channels** allow ions to pass freely, particularly K⁺, contributing to the negative charge inside the cell.

Explanation

1. Identify Key Components<br /> The resting membrane potential is primarily maintained by the **sodium-potassium pump** and **leaky ion channels**.<br /><br />2. Sodium-Potassium Pump Function<br /> The **sodium-potassium pump** maintains ion concentrations by actively transporting 3 Na⁺ ions out and 2 K⁺ ions into the cell, using ATP.<br /><br />3. Leaky Ion Channels Role<br /> **Leaky ion channels** allow ions to pass freely, particularly K⁺, contributing to the negative charge inside the cell.
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