为从成熟的红细胞上获取细胞膜,可用来处理细胞的试剂是(   

为从成熟的红细胞上获取细胞膜,可用来处理细胞的试剂是(    )

A、10%盐酸   B、蛋白酶   C、磷脂酶   D、清水

答案

D


解析:

此题考查成熟红细胞膜的化学物质组成和分离出纯细胞膜的方法。获取细胞膜就是让其破裂,让内部物质释放出。10%盐酸浓度高,使红细胞皱缩甚至杀死;脂类和蛋白质是细胞膜的主要组成物质,故蛋白酶、磷脂酶均使膜结构遭破坏;清水使细胞渗透吸水胀破,内部物质流出只剩细胞膜。故选D。

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