蛋白质协同效应发生时可出现() A.构象改变 B.亚基聚合 C.肽键断裂 D.二硫键

题型:单项选择题 B1型题

问题:

蛋白质协同效应发生时可出现()

A.构象改变

B.亚基聚合

C.肽键断裂

D.二硫键形成

E.蛋白质聚集

考点:口腔执业医师蛋白质的结构与功能蛋白质的结构与功能题库
题型:单项选择题 B1型题

The Man of Many Secrets—Harry Houdini—was one of the greatest American entertainers in the theater next century. He was a man famous for his escapes—from prison cells, from wooden boxes floating in rivers, from locked tanks full of water. He appeared in theaters all over Europe and America. Crowds came to see the great Houdini and his "magic" tricks.

Of course, his secret was not magic, or supernatural powers. It was simply strength. He had the ability to move his toes as well as he moved his fingers. He could move his body into almost any position he wanted.

Houdini started working in the entertainment world when he was 17, in 1891. He and his brother Theo performed card tricks in club in New York. They called themselves the Houdini Brothers. When Harry married in 1894, he and his wife Bess worked together as magician and assistant. But for a long time they were not very successful. Then Harry performed his first prison escape, in Chicago in 1898. Harry persuaded a detective to let him try to escape from the prison, and he invited the local newspapermen to watch.

It was the publicity that came from this that started Harry Houdini’s success. Harry had fingers trained to escape from handcuffs and toes trained to escape ankle chins. But his biggest secret was how he unlocked the prison doors. Every time he went into the prison cell, Bess gave him a kiss for good luck—and a small skeleton key, which is a key that fits many locks, pass quickly from her mouth to his.

Harry used these prison escapes to build his fame. He arranged to escape from the local prison of every town he visited. In the afternoon, the people of the town would read about it in their local newspapers, and in the evening every seat in the local theater would be full. What was the result World-wild fame, and a name remembered today.

It can be inferred from the passage that Houdini became famous ().

A. in 1894

B. before he married

C. at the age of 17

D. when he was about 24

题型:单项选择题 B1型题

房地产开发企业一级资质的注册资本大于等于( )万元。

A.1000
B.800
C.2000
D.5000

题型:单项选择题 B1型题

间接碘量法若在碱性介质下进行,由于()歧化反应,将影响测定结果。

A、S2O32-

B、I-

C、I2

D、S4O62-

题型:单项选择题 B1型题

请比较原核基因和真核基因的结构特征。

题型:单项选择题 B1型题

南京青奥会组委会将面向国内外甄选()名志愿者提供优质的志愿服务。

A、20000

B、30000

C、40000

D、50000

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