被动运输(passive transport)
互联网
物质在细胞内外浓度不同形成梯度。物质顺着梯度由高浓度向低浓度转运的过程叫被动运输。被动运输的动力是物质浓差,不需要消耗细胞代谢能(如水解ATP所释放的能量)或其他能量。自由扩散、促进扩散属于被动运输。
互联网
物质在细胞内外浓度不同形成梯度。物质顺着梯度由高浓度向低浓度转运的过程叫被动运输。被动运输的动力是物质浓差,不需要消耗细胞代谢能(如水解ATP所释放的能量)或其他能量。自由扩散、促进扩散属于被动运输。
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