NEET UG 2011 — Zoology Neural Control and Coordination

2011mcqmedium

When a neuron is an resting state, $i e$ , not conducting any impulse, the axonal membrane is

Official previous-year question

Held on 30 Apr 2011 · Verified 9 Jul 2026.

Options

A
equally permeable to both $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$ ions
B
impermeable to both $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$ ions
C
comparatively more permeable to $\mathrm{K}^{+}$ ions and nearly impermeable to $\mathrm{Na}^{+}$ ions
D
comparatively more permeable to $\mathrm{Na}^{+}$ ions and nearly impermeable to $\mathrm{K}^{+}$ ions

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Solution

Neurons are excitable cells because their membrane are in a polarised state. Different types of selectively permeable channels are present on the neural membrane. When a neuron is not conducting any impulse, ie, resting, the axonal membrane is comparatively more permeable to potassium ion $\left(\mathrm{K}^{+}\right)$ and nearly impermeable to sodium ion $\left(\mathrm{Na}^{+}\right)$ .

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Options

equally permeable to both $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$ ions

impermeable to both $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$ ions

comparatively more permeable to $\mathrm{K}^{+}$ ions and nearly impermeable to $\mathrm{Na}^{+}$ ions

comparatively more permeable to $\mathrm{Na}^{+}$ ions and nearly impermeable to $\mathrm{K}^{+}$ ions

Solution

NEET UG 2011 — Zoology Neural Control and Coordination

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Solution

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NEET UG 2011 — Zoology Neural Control and Coordination

Options

Did you get this right?

Solution

Your note

NEET UG Neural Control and Coordination in other years

More NEET UG Neural Control and Coordination questions

Other Zoology topics for NEET UG

Principles of Inheritance and Variation

Molecular Basis of Inheritance

Biotechnology - Principles and Processes

Human Health and Diseases

Human Reproduction

Evolution

Keep practicing Neural Control and Coordination