氨基酸转氨酶和脱羧酶的辅酶含有（）。 A.生物素 B.维生素B1 _爱下问搜题

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问题单项选择题 B1型题

氨基酸转氨酶和脱羧酶的辅酶含有（）。

A.生物素

B.维生素B1

C.维生素PP

D.维生素B6

E.泛酸

答案

参考答案：D

解析：5.构成FAD，是酰基辅酶A脱氢酶的辅酶；衍生的磷酸吡哆醛作为氨基酸转氨酶和脱羧酶的辅酶；维生素PP组成辅酶Ⅰ和辅酶Ⅱ，作为脱氢酶的辅酶，有递氢作用的还原酶的辅酶常为辅酶Ⅱ；生物素是羧化酶的辅酶；而泛酸组成辅酶A作为酰基的载体参与酰基。

完形填空

Mr. Johnson lives outside the town. He works in a post office. His wife is often ill and six children __26____ at school. He works hard but he is often short of __27____. In the end of every month his family are always__28____.
One afternoon, on his way home, it suddenly began to __29____. When he got home, he was wet through. He hurried to go __30____ after supper and his wife washed the clothes and shoes for him. __31____ she went to bed, she brought the clothes into the room but __32____ the shoes. The next morning Mr. Johnson couldn’t find his shoes. His wife found a pair of __33____ shoes under the bed for him. Then he went to __34____ and told the policeman about it.
“I __35____ ten dollars for my shoes, sir,” said the man. “Look! I have to __36____ such a pair of worn-out shoes!”
Several days later the police __37____ a thief and found the shoes. They were as worn-out as the __38____ which Mr. Johnson was wearing.
“You’ve fooled us, Mr. Johnson,” said a policeman. “The shopkeeper told me a pair of new shoes like them __39____ only seven dollars!”
“You’re right, ,sir,” said Mr. Johnson. “I’ve __40____ them for five years and I had them mended six times. And I paid three dollars to the shoemaker for mending them!”

B．bus station

C．post office

D．police station

名词解释

大禹