「2023衡中同卷英语单元检测9 答案」高三英语衡中同卷答案

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【答案】B【解析】通过蛋白质磷酸化和去磷酸化改变蛋白质的空间结构，进而实现细胞信号的传递，体现出蛋白质结构与功能相适应的观点；进行细胞信号传递的蛋白质需要磷酸化才能起作用，而ATP为其提供了磷酸基团和能量，从而参与细胞信号传递；如果这些蛋白质特定磷酸化位点的氨基酸缺失，将会使该位点无法磷酸化，进而影响细胞信号的传递；温度会影响蛋白激酶和蛋白磷酸酶的活性，进而影响蛋白质磷酸化和去磷酸化反应。

One possible version:Dear Sir/Madam,I am Li Hua,chairman of the Student Union.Knowing that you are selecting little envoys of culturalexchange to promote the communication with foreign schools,I'm writing to apply to be one of them.Having been chairman for two years,I'm confident to be the right person to share Chinese schoolculture with foreigners.In addition,I have traveled to Europe before and have experienced foreign cul-tures,which makes it possible for me to look at things from different perspectives.I do believe that bothmy experiences and personalities will meet your requirements.If you are satisfied with me,please contact me at 651-3099.Looking forward to your reply.Yours,Li Hua