皮皮学，免费搜题
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搜题
【单选题】
下列有关酶的叙述正确的结论有 ①产生酶的细胞都有分泌功能 ②部分从食物中获得，部分在体内转化 ③酶的基本单位是氨基酸或核糖核苷酸 ④酶是生物催化剂 ⑤生长激素与呼吸酶可来自于同一个细胞 ⑥能降低化学反应的活化能 [ ]A.
3个
B.
4个
C.
5个
D.
6个
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What does Carol tell us about her father?
A.
He told no one about his disease.
B.
He worked hard to pay for his medication.
C.
He depended on the nurses in his final days.
D.
He had stayed in the hospital since he fell ill.