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全日制普通高级中学教科书《生物》(试验修订本 )已经在全国使用。新教材中新增了 2 0多个实验和实习 (含选修本 ) ,这对于提高学生的生物学实验能力和科学素养有很重要的作用。本文试就增加的实验中的有关试剂的配制和原理作一简介。1 双缩脲试剂双缩脲试剂由试剂Ａ和试剂Ｂ
The full-time regular high school textbook “Biology” (experimental revision) has been used throughout the country. More than 20 new experiments and internships (including elective textbooks) have been added to the new textbooks. This has played an important role in improving students’biological experimental abilities and scientific literacy. This article will give an introduction to the formulation and principles of the reagents involved in the increased experiments. 1 biuret reagent biuret reagent by reagent A and reagent B