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【简答题】
焦磷酸酶可以催化焦磷酸水解或磷酸，其相对分子质量为120×10 3 ，由6个相同亚基组成。纯酶的Vmax为2800U/mg酶。它的一个活力单位规定为：在标准测定条件下，37℃、15min内水解10μmol焦磷酸所需要的酶量。问： （1）每mg酶在每秒钟内水解多少mol 底物？[3.11×10 -5 mol]。 （2）每mg酶中有多少mol的活性部位（假设每个亚基上有一个活性部位）？[5×10 -8 mol活性中心]。 （3）酶的转换数是多少？
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举一反三
【判断题】电讯频道作为法律关系的客体属于物。
A.
正确
B.
错误
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【单选题】“坎卦”这个卦象的含义是
A.
低陷不平
B.
险阻重重
C.
风生水起
D.
峰回路转
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【简答题】Part V Writing Directions: This part is to test your ability to do practical writing. You are required to write an e-mail according to the information given in Chinese. Remember to do the writing on t...
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【简答题】Directions: This part is to test your ability to do practical writing. You are required to write a Notice according to the information given below. Remember to write it on the Translation / Compositio...
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【简答题】We must work together to protect the environment and there is a great deal that we can do together.
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【单选题】Directions：There are 10 blanks in the following passage. For each blank there are four choices marked A), B), C) and D). You should choose the ONE that best fits into the passage.Remember back to when...
A.
attribute to
B.
sort to
C.
attach to
D.
resort to
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【简答题】Directions: This part is to test your ability to do practical writing. are required to write a Letter according to the information given below. Remember to write it on the Translation / Composition Sh...
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【简答题】Writing Directions: This part is to test your ability to do practical writing. You are required to write a resignation letter according to the following information given in Chinese. Remember to do th...
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【单选题】—________ we finish the work before class, Jack? —No, we_________ . We can do it after class.
A.
Must, don’t have to
B.
Must, must
C.
Can, mustn’t
D.
Can, needn’t
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【简答题】Can we make animals work for us? Some scientists think that we can teach animals to do a lot of things for the people. They say that in a farm or on TV, you may see elephants, monkeys, dogs or some ot...
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相关题目：
【判断题】电讯频道作为法律关系的客体属于物。
A.
正确
B.
错误
查看完整题目与答案
【单选题】“坎卦”这个卦象的含义是
A.
低陷不平
B.
险阻重重
C.
风生水起
D.
峰回路转
查看完整题目与答案
【简答题】Part V Writing Directions: This part is to test your ability to do practical writing. You are required to write an e-mail according to the information given in Chinese. Remember to do the writing on t...
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【简答题】Directions: This part is to test your ability to do practical writing. You are required to write a Notice according to the information given below. Remember to write it on the Translation / Compositio...
查看完整题目与答案
【简答题】We must work together to protect the environment and there is a great deal that we can do together.
查看完整题目与答案
【单选题】Directions：There are 10 blanks in the following passage. For each blank there are four choices marked A), B), C) and D). You should choose the ONE that best fits into the passage.Remember back to when...
A.
attribute to
B.
sort to
C.
attach to
D.
resort to
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【简答题】Directions: This part is to test your ability to do practical writing. are required to write a Letter according to the information given below. Remember to write it on the Translation / Composition Sh...
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【简答题】Writing Directions: This part is to test your ability to do practical writing. You are required to write a resignation letter according to the following information given in Chinese. Remember to do th...
查看完整题目与答案
【单选题】—________ we finish the work before class, Jack? —No, we_________ . We can do it after class.
A.
Must, don’t have to
B.
Must, must
C.
Can, mustn’t
D.
Can, needn’t
查看完整题目与答案
【简答题】Can we make animals work for us? Some scientists think that we can teach animals to do a lot of things for the people. They say that in a farm or on TV, you may see elephants, monkeys, dogs or some ot...
查看完整题目与答案