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Question

When a neuron is in resting state i.e. not conducting an impluse, the axonal membrane is _________________________.

A
Comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
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B
Equally permeable to both ion's Na+1 and K+ ions
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C
Impermeable to both Na+1 and K+ ions
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D
Comparatively more permeable to K+ ions and nearly impermeable to Na+1 ions
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Solution

The correct option is C Comparatively more permeable to K+ ions and nearly impermeable to Na+1 ions
Resting state refers to the state when the potential of state is -70 mV. In this state no impulse is conducted and the axonal membranes are more permeable to K+ and impermeable to Na+.
So, the correct option is option D.

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