试题与答案

下列关于实验的描述中,不正确的是[ ] A.浸泡在一定浓度KNO3溶液中的洋葱表

题型:选择题

题目:

下列关于实验的描述中,不正确的是[ ]

A.浸泡在一定浓度KNO3溶液中的洋葱表皮细胞,发生质壁分离后又出现质壁分离自动复原,与质壁分离自动复原有关的细胞器有线粒体和液泡

B.将双缩脲试剂加入到蛋清稀释液中,溶液变成紫色

C.将斐林试剂加入到麦芽糖溶液中时,就出现砖红色沉淀

D.DNA在NaCl溶液中的溶解度,随NaCl溶液浓度的不同而不同

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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