North Rhine-Westphalia Zentralabitur Biology Practice Questions - North Rhine-Westphalia Zentralabitur Biology (Biologie) Exam

Which ion movement primarily causes the depolarization phase of an action potential?

Na+ influx through voltage-gated sodium channels K+ influx through voltage-gated potassium channels Cl- efflux Ca2+ efflux from the cell

Correct Answer:

Na+ influx through voltage-gated sodium channels

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