下列哪组物质是由许多单体连接而成的多聚体( ) A.纤维素、脱氧核

下列哪组物质是由许多单体连接而成的多聚体(  )

A.纤维素、脱氧核糖核酸      B.蛋白质、核糖核苷酸

C.葡萄糖、核糖核酸          D.氨基酸、糖原

 

答案

A

多聚体是由单体结合而成的分子。核糖核苷酸、葡萄糖、氨基酸都是单体。所以用排除法可知选A。

 

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