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易化扩散有哪三个特点

更新时间: 2020-10-07 00:00:00     

一、易化扩散的三个特点:

1、顺浓度差转运,不耗能;

2、具有饱和现象,有竞争性;

3、借助载体有特异性。如葡萄糖进入细胞内。

二、易化扩散又称促进扩散、协助扩散,或帮助扩散;易化扩散是药物与生物膜上的特殊载体形成可逆性的复合物,进行不耗能的顺浓度差转运。

关键词: 扩散 特点

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