本题目来源于试卷: Interaction & Interdependence C.5 Neural Signaling，类别为 IB生物学
[单选题]
At what membrane potential do voltage-gatedklo;rl k(0y+y q: 4sikq64ssayef c(0 wklh77sodium channels open?
A. -70 mV
B. -50mV
C. +30 mV
D. 0 mV
参考答案: B
本题详细解析:
Explanation: -50mV is the threshold potential that must be reached for voltage-gated sodium channels to open. Choice A is incorrect, as -70 mV is the resting potential of a neuron. Choice C is incorrect as at +30 mV, voltage-gated potassium channels are triggered to open. Choice D is incorrect as at 0mV the voltage-gated sodium channels are already open.
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