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细胞膜的功能
更新时间: 2021-03-25 16:43:26  

1、其主要功能是选择性地交换物质,吸收营养物质,排出代谢废物,分泌与运输蛋白质。

2、细胞膜主要是由磷脂构成的富有弹性的半透性膜,膜厚7~8nm,对于动物细胞来说,其膜外侧与外界环境相接触。

3、细胞膜主要由脂质(主要为磷脂)、蛋白质和糖类等物质组成;其中以蛋白质和脂质为主。

关键词: 细胞膜 功能

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