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At resting membrane potential, voltage-gated potassium ion channels are open.

Question

At resting membrane potential, voltage-gated potassium ion channels are open.

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Solution

No, at resting membrane potential, voltage-gated potassium ion channels are not open. They open during the repolarization and hyperpolarization phases of an action potential to allow potassium ions to leave the cell, which helps to return the membrane potential back to its resting state. At resting membrane potential, these channels are typically closed.

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The membrane potential at which voltage-gated sodium channels open is called .

Reestablishment of the resting membrane potential occurs throughMultiple ChoiceActive transport of only potassium ionsDiffusion of sodium and potassium ionsActive transport of sodium and potassium ionsActive transport of only sodium ions

Although the membrane of a "resting" neuron is highly permeable to potassium ions, its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is alsofully permeable to sodium ions.slightly permeable to sodium ions.highly permeable to chloride ions.fully permeable to calcium ions.impermeable to sodium ions.SubmitRequest Answer

Establishing the resting membrane potential requires energy through the use of the _______.potassium-glucose pumpsodium leakage channelssodium-potassium pumpsodium-glucose pump

Resting membrane potentials are important to neuron function because they:conserve energyprovide potential for future electrical communicationincrease the potassium levels outside the cellresult in high concentrations of sodium inside the cell

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