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Gaokao Biology Practice Question

下列关于研究淀粉酶的催化作用及特性实验的叙述, 正确的是

  1. A.低温主要通过改变淀粉酶 氨基酸组成, 导致酶变性失活
  2. B.稀释 100 万倍的淀粉酶仍有催化能力, 是因为酶的作用具高效性
  3. C.淀粉酶在一定 $\mathrm{pH}$ 范围内起作用, 酶活性随 $\mathrm{pH}$ 升高而不断升高
  4. D.若在淀粉和淀粉酶混合液中加入蛋白酶, 会加快淀粉的水解速率

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