Quiz: Membrane Permeability to Ions in Nerve Impulses
Pearson Edexcel Level 3 Advanced GCE in Biology A (Salters-Nuffield) (9BN0)
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Building on what you've learned about neurones and action potentials, let's test your understanding of membrane permeability to ions in nerve impulses!
Which ion is responsible for depolarisation during an action potential?
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During repolarisation, {{blank0}} ions move out of the neurone, restoring the {{blank1}} potential.
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Which statements about ion movement during an action potential are correct? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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What is the role of the sodium-potassium pump in maintaining membrane potential?
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Match the items on the left with their correct pairs on the right
Which factors affect the permeability of the neurone membrane to ions? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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The {{blank0}} channels open during depolarisation, allowing sodium ions to enter, while {{blank1}} channels open during repolarisation, allowing potassium ions to leave.
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What happens to membrane permeability during the refractory period?
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