1985年起,使用的高中《生物》课本乙种本中,又增加了三个实验(观察植物细胞的质壁分离和复原、观察根对矿质元素离子的交换吸附现象和叶绿体中色素的提取和分离)。这些实验对绝大多数教师来说是生疏的,缺乏掌握实验的基本技能。为了提高教师素质,确保学生 Since 1985, three additional experiments have been added to the textbooks used in the Biology Biology class of high school (observation of the plasmolysis and restoration of plant cells, observation of the exchange and adsorption of ions of mineral elements and the extraction of pigments in chloroplasts and Separated). These experiments are unfamiliar to most teachers and lack the basic skills to master the experiment. In order to improve the quality of teachers, to ensure that students