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Neural Control and Coordination question

2004 · Q11
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Neural Control and Coordination question

2004 · Q11

NEETBiologyNeural Control and CoordinationMCQ+4 / −1
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive
  1. A
    K+ into the cell
  2. B
    K+ and Na+ out of the cell
  3. C
    Na+ into the cell
  4. D
    Na+ out of the cell.
View written solutionFree

Correct answer: C

In a resting state of the neural membrane, Na+ concentration is higher on the outer side and K+ concentration is more within the cell. This concentration gradient is maintained by voltage gated channels. Hence if diffusion is allowed Na+ would enter the cell and K+ would leave.

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