论文部分内容阅读
学生在做观察植物细胞的质壁分离和复原实验时，常出现一些异常的实验现象，不能收到预期的效果。我根据多年指导学生完成此实验所积累的资料，对常出现的异常实验现象分析如下：一、镜检视野中有模糊和清晰两重物象［原因］取材过厚，有几层细胞。［纠正］用刀片在洋葱鳞片叶
When students are observing the plasmolysis and recovery experiments of plant cells, some abnormal experimental phenomena often occur and they cannot receive the expected results. Based on the data accumulated over many years of directing students to complete this experiment, I have analyzed the abnormal experimental phenomena that often appear as follows: 1. There are fuzzy and clear dual images in the field of vision of the microscope [Cause] The material is too thick and has several layers of cells. [corrected] with blades in onion scale leaf