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  • 1(current)
Q. No.
When the neuron is not conducting any impulse, i.e., resting, the axonal membrane:
1. is comparatively more permeable to sodium ions and nearly impermeable to potassium ions.
2. is freely permeable to sodium ions and potassium ions.
3. is impermeable to sodium ions and potassium ions.
4. is comparatively more permeable to potassium ions and nearly impermeable to sodium ions.
Subtopic:  Origin of Resting Membrane Potential | Action Potential |
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Each time the sodium-potassium pump functions, it actively transports:
1. 3 sodium ions outwards and 2 potassium ions into the cell.
2. 3 sodium ions into the cells and 2 potassium outwards.
3. 2 sodium ions outwards and 3 potassium ions into the cell.
4. 2 sodium ions into the cells and 3 potassium ions outwards.
Subtopic:  Origin of Resting Membrane Potential | Action Potential |
 85%
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In a resting axonal membrane:
1. The outer surface possesses a positive charge while its inner surface becomes negatively charged.
2. The outer surface possesses a negative charge while its inner surface becomes positively charged.
3. Both the outer and the inner surface are positively charged.
4. Both the outer and the inner surface are negatively charged.
Subtopic:  Origin of Resting Membrane Potential | Action Potential |
 90%
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The re-establishment of the resting membrane potential after depolarization is primarily due to:

1. Sodium potassium pump 2. Influx of sodium
3. Efflux of potassium 4. Efflux of sodium
Subtopic:  Origin of Resting Membrane Potential | Action Potential |
 60%
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Consider the two statements:

I: Electric synapses are rare in our system.
II: Impulse transmission across electric synapse is always faster than across a chemical synapse.

1. Both I and II are correct and II explains I
2. Both I and II are correct and II does not explain I
3. Only I is correct
4. Only II is correct

Subtopic:  Origin of Resting Membrane Potential | Action Potential |
 78%
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