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一、教材分析人教版必修一第4章《细胞的物质输入和输出》共3节内容,第1节《物质跨膜运输的实例》主要说明细胞膜是选择透过性膜,膜为什么具有选择透过性?这与第2节膜结构有关,第3节在细胞膜的亚显微结构基础之上,带领学生继续探究细胞膜控制物质进出功能的方式和原理。这3节内容的内在联系是:功能—结构—功能。本节内容是在初步了解生物膜结构和功能的基础上进一步学习生物膜的功能,是对已掌握知识的
First, the textbook analysis PEP Edition compulsory a Chapter 4 “cell input and output of materials,” a total of three sections, Section 1 “examples of material transmembrane transport” mainly shows that the membrane is the choice of transmembrane membrane, the membrane has a choice Permeability? This is related to the membrane structure of Section 2, Section 3, on the basis of the sub-microscopic structure of the cell membrane, leading students to continue exploring the ways and principles of cell membrane entry and exit of functions. The three sections are intrinsically linked: Function - Structure - Function. This section is based on a preliminary understanding of the structure and function of the biofilm to further study the function of the biofilm, is already mastered the knowledge