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Gaokao Biology Practice Question

1.( 6分)同一物种的两类细胞各产生一种分泌蛋白,组成这两种蛋白质的各 种氨基酸含量相同,但排列顺序不同。其原因是参与这两种蛋白质合成的( )

  1. A.tRNA种类不同
  2. B.mRNA碱基序列不同
  3. C.核糖体成分不同
  4. D.同一密码子所决定的氨基酸不同

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