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STD 11 - 18. Neural control and coordination — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 18. Neural control and coordination1 Mark
MCQ
In a resting neuron, the axonal membrane is
  • A
    Nearly impermeable to potassium ions $(K^+)$
  • B
    Impermeable to positively charged proteins present in the axoplasm
  • ✓
    Comparatively more permeable to $K^+$
  • D
    Completely permeable to sodium ions $(Na^+)$
✓

Answer

Correct option: C.
Comparatively more permeable to $K^+$
c
At resting state, axonal membrane is more permeable to $K^+$ ions due to opening of $K^+$ leaky channels

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