本实验是根据生物科学教学研究中心(简称BSCS)的实验加以修改而成的。它简化了BSCS的实验,用一种以模型作为辅助平段的方法,通过与细胞分裂相联系的细胞表面积和体积之比率的分析,使学生能更好地了解细胞为什么不能吸收足够的养料以维持继续生长。在这个修改过的实验中,学生使用4个加有一种PH指示剂的琼脂凝胶柱o 4个凝胶柱的大小不同,各代表一个细胞模型。然后每个“细胞”在一规定的时间内“喂”一种酸,颜色改 This experiment is based on the biological science teaching and research center (BSCS) experiments to be modified. It simplifies BSCS experiments by using a model-assisted flat-section approach that allows students to better understand why a cell can not absorb enough nutrients by analyzing the ratio of cell surface area to volume associated with cell division Maintain and continue to grow. In this modified experiment, students used four agar gel columns with a pH indicator. Four gel columns of different sizes, each representing a cell model. Each “cell” then “feeds” an acid for a specified amount of time, changing color