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        本题目来源于试卷:  Interaction & Interdependence C.1 Enzymes & Metabolism ,类别为 IB生物学 
[单选题]What is the substrate for the enz.grlqfejr s 04q)i2 ,k)nst (oyme lactyvhh40. q;i.p b w6r.yvm r8znase?
 
 
 
A. Glucose B.  Galactose
 C.  Lactose
 D.  Fructose
 
 
 参考答案:  C
 
 
 本题详细解析:
 The enzyme lactase breaks down the substrate lactose into glucose akqj5  u/a-u(ivt1kj;ut ks98 ynd galactose.
Glucose and galactose are products of the reaction (Choices A and B).
Fructose is no sqj8vk jt-(5tu/ku  1uika;9yt a substrate for the enzyme lactase (Choice D).
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