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【判断题】
Molecular mass is the sum of the atomic masses (in amu) in a molecule .A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】HDL的功能是
A.
从肝内运输胆固醇到外周组织
B.
从肝内运输磷脂到外周组织
C.
从肝内运输甘油三酯到外周组织
D.
从外周组织运输胆固醇到肝内
E.
从肝内运输FFA到外周组织
【简答题】The election of Kennedy as the president of America is not a victory of party but a celebration of_____________.
【单选题】Since he was elected as the president of the student association, many extra responsibilities have been ______ him.
A.
took away from
B.
looked upon as
C.
thrust upon
D.
equipped with
【单选题】The company decided to _______ a Spanish manager as the president of the company.
A.
appoint
B.
chart
C.
retail
D.
coerce
【单选题】(2020吉林东北师大附中高三上模拟)锁钥模型是E.Fischer于1890年提出的,该模型认为:酶和底物在其结合部位的结构应当严格匹配,高度互补,犹如一把锁与其原装钥匙在结构上的互补与匹配,下列有关叙述正确的是( )
A.
该模型可用来解释酶能降低反应的活化能
B.
该模型在一定程度上可用来解释酶的专一性
C.
该模型可用来解释酶的浓度对反应速率的影响
D.
该模型看用来解释酶促反应在温和条件下进行
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