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How Is the Resting Potential Maintained?

During depola...

Question

During depolarisation, the magnitude of negative membrane potential is reduced due to influx of sodium ions.

A

False

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B

True

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Solution

The correct option is B True

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Q. Assertion :In depolarisation process, there is a positive charge on the outer side of nerve fibres and a negative charge on its inner side Reason: During depolarisation, permeability of plasma membrane increases for sodium ions, so N

a^{+}

ions move to outer side of the membrane and

K^{+}

enter the nerve fibre

Q. Assertion :In depolarisation process, there is a positive charge on the outer side of a nerve fibre and a negative charge on its inner side. Reason: During depolarisation, permeability of plasma membrane increases for sodium ions, so

N a^{+}

move to outer side of the membrane and

K^{+}

enter into the nerve fibre through it.

Q. Potential difference across resting membrane in neurons is negatively charged. This is due to differential distribution of the following ions:

Q. Calcium and sodium are the major ions involved in the generation of membrane potential.

During development of action potential in a nerve fibre, positive and negative charges on outer and inner side of axon membrane are reversed due to

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How Is the Resting Potential Maintained?

Standard XII Biology

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