复习课主要是将已学知识进行系统的归纳、总结,使所学知识建立点、线、面的有机结合。本文通过树状结构将生命系统中最重要的结构单元——细胞的相关知识进行归纳、总结,以达到学生对这块知识的重要性的充分认识,加强对细胞→组织→器官→系统→个体→种群→群落→生态系统这一生命系统结构的理解和应用。 The review class mainly summarizes and sums up the learned knowledge systematically, so that the learned knowledge can be organically combined with points, lines and surfaces. This article summarizes and summarizes the cell-related knowledge of the most important structural unit in the living system through a tree structure, so as to achieve students’ full understanding of the importance of this piece of knowledge and strengthen the cell→organization→organ→system→individual. → Population → Community → Ecosystem This is the understanding and application of the life system structure.