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NEET Practice Questions (MCQs) with Answers & Solutions

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All Physics Chemistry Botany Zoology

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At Resting condition, the neuron membrane is

A. Negative from outside B. Negative from inside C. Positive from inside D. Both A and C

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Explanation

NCERT page number 317

21.3.1 Generation and Conduction of Nerve impulses

Neural Control And Coordination

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The………. Difference across the resting membrane is called as Resting potential.

A. Electrochemical potential B. Elecrical potential C. Chemical D. Chemiosmotic

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Explanation

NCERT page number 318

21.3.1 Generation and Conduction of Nerve impulses

Neural Control And Coordination

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When a stimulus is applied at a site over neuron membrane

A. It becomes freely permeable to Sodium ions B. It becomes freely permeable to potassium ions C. It causes reversal of polarity from positive to negative on inner side D. Both A and C

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Explanation

NCERT page number 318

21.3.1 Generation and Conduction of Nerve impulses

Neural Control And Coordination

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The polarity of the membrane at site A is reversed ie inside of the membrane becomes changed from negative to positive

A. Called as depolarization B. Called as repolarization C. Called as polarization D. Called as hyperpolarization

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Explanation

NCERT page number 318

21.3.1 Generation and Conduction of Nerve impulses

Neural Control And Coordination

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The……….. at the site A over neuron is ……..Or it termed as ……

A. Resting membrane potential, active potential, nerve impulse B. Electric potential difference, Action potential, Nerve impulse C. Resting membrane potential, nerve impulse, action potential D. Action potential, electric potential difference, active potential

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Explanation

NCERT page number 318

21.3.1 Generation and Conduction of Nerve impulses

Neural Control And Coordination

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In a neuron if stimulus is given at point A then in which direction current flows?

A. From site A to site B on innerside B. From site A to site B on outerside C. From site B to site A on innerside D. Both A and B

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Explanation

NCERT page number 318

21.3.1 Generation and Conduction of Nerve impulses

Neural Control And Coordination

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Which of the following is not associated with electrical synapse?

A. No synaptic cleft B. Pre synaptic membranes and post synaptic membranes are in close association with each other C. Electric current flow directly from one neuron to other neuron through synapse D. Very common synapse in our system

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Explanation

NCERT page number 319

21.3.2 Transmission of Impulses

Neural Control And Coordination

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Which of the following is not associated with Impulse transmission across an electrical synapse?

A. Faster than chemical synapse B. Rare in our system C. No synaptic cleft D. Impulse transmission is not similar as that of transmission within a neuron

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Explanation

NCERT page number 319

21.3.2 Transmission of Impulses

Neural Control And Coordination

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Synaptic cleft is not

A. Separated by pre synaptic and post synaptic neurons B. a fluid filled space C. A part of synapse D. Present in all synapses

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Explanation

NCERT page number 319

21.3.2 Transmission of Impulses

Neural Control And Coordination

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Which of the following is not associated with chemical synapse?

A. Slower than electrical synapse B. Synaptic cleft C. Release of neurotransmitter D. Transmission is similar as that of nerve impulse within a neuron

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Explanation

NCERT page number 319

21.3.2 Transmission of Impulses

Neural Control And Coordination

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