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Gaokao Biology Practice Question

神经细胞处于静息状态时, 细胞内外 $K^{+}$ 和 $\mathrm{Na}^{+}$的分布特征是

  1. A.细胞外 $\mathrm{K}^{+}$和 $\mathrm{Na}^{+}$浓度均高于细胞内
  2. B.细胞外 $\mathrm{K}^{+}$和 $\mathrm{Na}^{+}$浓度均低于细胞内
  3. C.细胞外 $K^{+}$浓度高于细胞内, $\mathrm{Na}^{+}$相反
  4. D.细胞外 $K^{+}$浓度低于细胞内, $\mathrm{Na}^{+}$相反

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