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Q. No.What restores the resting potential of the membrane at the site of excitation?
| 1. | Diffusion of sodium to the inside of the cell. |
| 2. | Diffusion of sodium to the outside of the cell. |
| 3. | Diffusion of potassium to the outside of the cell. |
| 4. | Diffusion of potassium to the inside of the cell. |
Subtopic: Â Origin of Resting Membrane Potential |
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What restores the resting membrane potential of the axonal membrane at the site of excitation?
1. Influx of sodium ions
2. Efflux of sodium ions
3. Influx of potassium ions
4. Efflux of potassium ions
1. Influx of sodium ions
2. Efflux of sodium ions
3. Influx of potassium ions
4. Efflux of potassium ions
Subtopic: Â Origin of Resting Membrane Potential |Â Action Potential |
 56%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Depolarisation of axonal membrane is due to influx of sodium ions. |
| Statement II: | Repolarisation of axonal membrane is due to efflux of sodium ions. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Â Origin of Resting Membrane Potential |Â Action Potential |
 63%
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When neuron is resting, which of the following is false with respect to that
| 1. | It is not conducting any impulse |
| 2. | Axonal membrane is more permeable to potassium ions |
| 3. | Axonal membrane won't allow any flow of sodium ions across it |
| 4. | Membrane is impermeable to negatively charged proteins |
Subtopic: Â Origin of Resting Membrane Potential |Â Action Potential |
 57%
From NCERT
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| Assertion(A): | The resting axonal membrane is more permeable to potassium ions than sodium ions |
| Reason(R): | Potassium is the principal cation in the intracellular fluid. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False and (R) is True. |
Subtopic: Â Origin of Resting Membrane Potential |
From NCERT
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What restores the resting potential of the axonal membrane at the site of excitation after depolarisation?
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
Subtopic: Â Origin of Resting Membrane Potential |Â Action Potential |
 58%
From NCERT
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