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酒精在高中生物实验中应用广泛,不同浓度的酒精溶液在高中生物实验中的使用方法、作用及原理各不相同。在实验中从试剂的选用到关键操作步骤等容易引起学生混淆或理解困难,有必要讲解清楚。这对指导高中生物实验教学具有很好的帮助。
Alcohol is widely used in high school biology experiments. Different concentrations of alcohol solution used in high school biology experiments have different methods, roles and principles. In the experiment from the reagent selection to the key steps and other easily lead to confusion or understanding students difficult, it is necessary to explain clearly. This is good for guiding high school biology experiment teaching.