题干

下列有关“DNA的粗提取和鉴定”实验的叙述正确的是(    )

A:利用DNA能溶于酒精溶液,而蛋白质不溶于酒精溶液,可将DNA与蛋白质分离

B:利用高温能使DNA变性,却对蛋白质没有任何影响的特性,可将DNA 与蛋白质分离

C:利用DNA在0.14mol/LNaCl溶液中溶解度最大的特点,可将DNA与蛋白质分离

D:在DNA滤液中加入嫩肉粉,通过木瓜蛋白酶的作用,可将DNA与蛋白质分离

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D

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