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Action Potential

Function of ...

Question

Function of $N a^{+} - K^{+}$ pump is to enable

N a^{+}

out and

C l^{-}

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C l^{-}

out and

N a^{+}

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N a^{+}

in and

K^{+}

out

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N a^{+}

out and

K^{+}

in.

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Solution

The correct option is B $N a^{+}$ out and $K^{+}$ in.
The $N a + K +$ ATPase pumps $3 N a^{+}$ out of the cell and $2 K^{+}$ that into the cell, for every single ATP consumed.
The $N a + K +$ ATPase pump helps to maintain osmotic equilibrium and membrane potential in cells. Hence, Option D is correct.

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\begin{matrix} N a^{+} & C l^{-} & N a^{+} & C l^{-} & N a^{+} & C l^{-} C l^{-} & □ & C l^{-} & N a^{+} & □ & N a^{+} N a^{+} & C l^{-} & □ & N a^{+} & C l^{-} & C l^{-} C l^{-} & N a^{+} & C l^{-} & N a^{+} & □ & N a^{+} \end{matrix}

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