NEET-UG Biology · Class 11
Resting neuron and the nerve impulse — NEET & JEE Questions
Resting neuron and the nerve impulse is a topic in Neural Control and Coordination, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 16 published NEET-UG questions on Resting neuron and the nerve impulse, each with the marking scheme of the real paper. The ideas it examines include Which ions sit inside a resting neuron, Ions the pump moves in and out, Order of events in a nerve impulse.
- questions
- 16
- shown here
- 10
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Key formulas and concepts
The ideas Resting neuron and the nerve impulse is examined on, as they are tagged in the syllabus tree.
- Which ions sit inside a resting neuron
- Ions the pump moves in and out
- Order of events in a nerve impulse
- Voltage values at rest and at peak
Resting neuron and the nerve impulse MCQs with solutions
10 of the 16 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Rapid conduction in a myelinated axon by jumping between nodes:
- A. continuous diffusion only
- B. synaptic delay
- C. saltatory conduction
- D. muscle contraction
Rapid depolarisation is mainly caused by:
- A. chloride efflux only
- B. sodium influx
- C. potassium influx
- D. calcium precipitation
Repolarisation is mainly caused by:
- A. potassium efflux
- B. glucose influx
- C. sodium influx
- D. protein secretion
The resting neuronal membrane is normally:
- A. uncharged on both sides
- B. positive inside relative to outside
- C. negative inside relative to outside
- D. permanently depolarised
Which ion is normally more concentrated inside a resting neuron than outside?
- A. Calcium
- B. Sodium
- C. Potassium
- D. Chloride
What causes the rapid depolarising phase of a typical neuronal action potential?
- A. Loss of the cell membrane
- B. Opening of potassium channels with potassium influx
- C. Closure of every ion channel
- D. Opening of voltage-gated sodium channels
Which ionic event contributes most to repolarisation after an action potential peak?
- A. Potassium efflux
- B. Sodium influx
- C. Calcium entry into the nucleus
- D. Chloride pumping from the axon
At rest, the neuronal membrane is polarised mainly because
- A. ion distributions and selective membrane permeability make the inside negative relative to outside
- B. all ions are equally distributed
- C. the membrane is freely permeable to every ion
- D. the inside contains no charged particles
A stimulus depolarises a neuron but does not reach threshold. What is the likely result?
- A. A larger-than-normal action potential forms
- B. No full action potential is generated
- C. The resting potential is permanently lost
- D. Every terminal releases transmitter
During the rising phase of a typical action potential, rapid depolarisation occurs mainly because
- A. voltage-gated sodium channels open and Na+ enters
- B. potassium channels alone cause K+ influx
- C. chloride leaves through pumps
- D. the Na+/K+ pump instantly reverses
Common mistakes in Resting neuron and the nerve impulse
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Treating refractoriness as permanent inactivation.
- Assuming ion pumps directly create each action potential rather than maintain the gradients needed for excitability.
- Uses continued sodium entry to explain restoration of negative membrane potential.
- Assumes anatomical one-way ion flow, rather than membrane refractoriness, determines direction.
- Assumes the Na+/K+ pump alone can generate a propagating action potential.
- Assumes myelin speeds conduction by increasing continuous ion leakage.
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