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Gaokao Biology Practice Question

下列关于人体中蛋白质功能的叙述，错误的是

  1. A.浆细胞产生的抗体可结合相应的病毒抗原
  2. B.肌细胞中的某些蛋白质参与肌肉收缩的过程
  3. C.蛋白质结合 $\mathrm{Mg}^{2^{+}}$形成的血红蛋白参与 $\mathrm{O}_{2}$ 运输
  4. D.细胞核中某些蛋白质是染色体的重要组成成分

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