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Question : How is it that the intracellular levels of K^+ are higher than extracellular levels in animal cells ?

Answer»

Solution :ION pathways are controlled. They are either closed or open. `NA^+ , K^+` and ATPase can change polarity in cell membrane.
When `3Na^+` moveout from cell membrane `2K^+` enter inside. So negative charge is formed compared to outside so the layer is polarised. Due to this REASON in CELLULAR state proportion of `K^+`is more compared to OUTER state.


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