关于蛋白质合成，错误的是A．肽链合成起始阶段需要起始因子 B．

搜题请搜索小程序“爱下问搜题”

问题单项选择题

关于蛋白质合成，错误的是

A．肽链合成起始阶段需要起始因子

B．肽链合成延长阶段需要延长因子

C．肽链合成终止阶段需要终止因子

D．在大小两亚基聚合的核蛋白体上进行的

E．核蛋白体从mRNA5＇→3＇移动，蛋白质从C端→N端合成

答案

参考答案：E

填空题

用所给词的适当形式填空。

Dear Tim,

I have a pen friend. Her name is Alice. She 1____ (come) from America. She is twelve years old.

She is a school girl. She says China is a 2____ (friend) country. She wants some Chinese friends. She

wants 3____ (be) a reporter because she likes to talk with people and 4____ (write) stories.

There 5____ (be) twenty students in her class. They come from different 6____ (country). They

all can speak English. They 7____ (learn) Chinese now. Her 8____ (parent) are working in China.

Her mother is a teacher in a middle school in Beijing. She 9____ (teach) English. Her father is a doctor

in a hospital. They have many Chinese friends. They all like 10____ (Chinese) very much. Yours,

Tom

判断题

()《烟草专卖许可证管理办法》法律责任一章中涉及行政处罚种类的有警告和罚款二种。