单选题:在280nm波长附近具有最大光吸收峰的氨基酸是(  )

题目内容:
在280nm波长附近具有最大光吸收峰的氨基酸是(  ) A.色氨酸
B.丝氨酸
C.精氨酸
D.天冬氨酸
E.苯丙氨酸
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答案解析:

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