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1 正确选择实验材料是实验成功的条件 课本中提供的实验材料可作依据,如高中生物实验四是用菠菜做材料,用来提取和分离叶绿体色素,是一种较理想的实验材料。因为菠菜取材方便,种植不受季节限制;菠菜叶的更新速度快,据有人测定,在72h内可更新
1 The correct choice of experimental materials is a condition for successful experiment. Experimental materials provided in textbooks can be used as a basis. For example, high school biological experiment IV uses spinach as a material to extract and separate chloroplast pigments, which is an ideal experimental material. Because the spinach is easy to use, the planting is not limited by the season; the spinach leaf renewal speed is fast, according to some people, it can be updated within 72 hours.