下列有关生物实验原理、方法或结果的描述中,正确的是 A.“制作

下列有关生物实验原理、方法或结果的描述中,正确的是

A.“制作并观察植物细胞有丝分裂的临时装片”活动中,需保持细胞的活体状态

B.用苏丹Ⅲ鉴定含油多的植物组织时,显微镜下可观察到染成橙黄色的颗粒

C.番茄含有丰富的葡萄糖和果糖,常用作还原糖的鉴定材料

D.提取光合色素时,加入少量二氧化硅是为防止研磨过程中叶绿素被破坏

答案

B

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