在人教版高中《生物》(必修)第一册实验一“生物组织中可溶性还原糖、脂肪、蛋白质的鉴定”中三种成分的鉴定分别选用了不同的材料,不仅准备起来麻烦,学生在一节课内完成实验也比较困难,尤其是脂肪的鉴定,切不出理想的花生子叶薄片,观察效果就不明显。通过实验我们发现用鲜牛奶可以同时做三种成分的鉴定实验,且节省时间,效果明显。 The identification of the three components used in the identification of the three components of the first edition of the PEP “biology” (required), “identification of soluble reducing sugars, fats, and proteins in biological tissues”, selected different materials, not only to prepare for trouble, but also to It is also difficult to complete the experiment in a class, especially the identification of fat, and the ideal peanut cotyledon sheet cannot be cut, and the observation effect is not obvious. Through experiments, we have found that fresh milk can be used to identify three components at the same time, saving time and achieving significant results.