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Gaokao Biology Practice Question

用体外实验的方法可合成多肽链。已知苯丙氨酸的密码子是 UUU, 若要在体外合成同位 素标记的多肽链, 所需的材料组合是 (1)同位素标记的 tRNA (2)蛋白质合成所需的酶 (3)同位素标记的苯丙氨酸 (4)人工合成的多聚尿嘧啶核苷酸 (5)除去了 DNA 和 mRNA 的细胞裂解液

  1. A.(1)(2)(4)
  2. B.(2)(3)(4)
  3. C.(3)(4)(5)
  4. D.(1)(3)(5)

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