Zoology-(general)
NEET Zoology (general) MCQ Question
Type: MCQ-numerical-Hard-Class 11
If the resting potential of a neuron's membrane is -70 mV and the membrane becomes freely permeable to Na+ ions, what will be the expected change in membrane potential at the site of depolarization?
A
The membrane potential will become positive.
B
The membrane potential will remain at -70 mV.
C
The membrane potential will become more negative.
D
The membrane potential will reach 0 mV.
Correct Answer
Option A
Detailed Explanation
When a stimulus is applied and the membrane becomes permeable to Na+, there is a rapid influx of Na+ ions, causing the inside of the membrane to become positively charged and thus depolarizing the membrane.
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