一、重点知识提示1.细胞膜的结构特点是流动性,功能特点是选择透过性。2.细胞的内膜系统与生物膜的区别:细胞的内膜系统是指真核细胞内,在结构、功能或发生上相关的、由膜围绕而成的细胞器或细胞结构,如核膜、内质网、高尔基体、线粒体、叶绿体、溶酶体等。细胞内膜是相对于包围在细胞外面的细胞膜而言的。细胞的内膜系统为真核细胞所特有,而 First, the key knowledge tips 1. The structural characteristics of the cell membrane is fluidity, functional features is the choice of permeability. 2. Cells of the endomembrane system and the difference between the biofilm: The cell’s intima system refers to the eukaryotic cells, in the structure, function or occurrence, the membrane organelles or cell structures, such as the nuclear membrane, Endoplasmic reticulum, Golgi apparatus, mitochondria, chloroplast, lysosome and so on. The intracellular membrane is relative to the cell membrane that surrounds the outside of the cell. The cell’s intima system is specific for eukaryotes, however