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To avoid the danger of osmotic equilibrium due to passive transport of Na+ and Cl- from into cytoplasm from ECF and that of K+ from cytoplasm into ECF, all the cells:

[A].	Constantly expel Na+ into ECF and take K+ from cytoplasm against concentration gradient	[B].	All cells do not expel Na+ into ECF and take K+ from cytoplasm
[C].	All cells expel K+ into ECF and take Na+ from cytoplasm	[D].	All cells expel Cl- into ECF and take HCO-3

Answer: Option A

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