下图表示一个动物细胞内外不同离子的相对浓度由图分析可知维持细胞内外浓度依靠a自由扩散b协助扩散c主动运输d渗透作用——青夏教育精英家教�—— Template




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tomski下图表示一个动物细胞内外不同离子的相对浓度由图分析可知维持细胞内外浓度依靠a自由扩散b协助扩散c主动运输d渗透作用——青夏教育精英家教�—— coloring