某种酶以反应速度对底物浓度最图呈S型曲线,此酶属于()。
A、符合米氏方程的酶
B、变构酶
C、多酶复合体
D、单体酶
参考答案:B
Hannah ________me; otherwise, other students wouldn't have known my result of the quiz.[ ]
A. may betray
B. must betray
C. must have betrayed
D. should betray
()泛指张家口以北95千米处到承德以北95千米处。
A.坝上高原
B.河北平原
C.太行山脉
D.燕山山脉