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Gaokao Biology Practice Question

3.( 6分)若除酶外所有试剂均已预保温,则在测定酶活力的试验中,下列操 作顺序合理的是( )

  1. A.加入酶 →加入底物 →加入缓冲液 →保温并计时 →一段时间后检测产物的量
  2. B.加入底物 →加入酶 →计时 →加入缓冲液 →保温 →一段时间后检测产物的量
  3. C.加入缓冲液 →加入底物 →加入酶 →保温并计时 →一段时间后检测产物的量
  4. D.加入底物 →计时 →加入酶 →加入缓冲液 →保温并计时 →一段时间后检测产 物的量

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