关于生物体内氨基酸的叙述错误的是                     

关于生物体内氨基酸的叙述错误的是                               (  )

A.构成蛋白质的氨基酸分子的结构通式是

B.人体内氨基酸的分解代谢最终产物是水、二氧化碳和尿素

C.人体内所有氨基酸均可以互相转化

D.两分子氨基酸通过脱水缩合可以形成二肽

答案

解析 部分氨基酸可以在人体内相互转化,但是有几种是在人体内不能合成、

的,必须从食物中获得,它们被称为必需氨基酸。

答案 C

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