精选优质文档-倾情为你奉上| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. - Guo Ge Tech2007年口腔执业医师资格考试习题集-生物化学一、1.真核基因的转录调控 A.和原核基因非常相似 B.以负性调节为主 C.正性和负性调节各半D.以正性调节为主 E.只有正性调节2.真核基因结构并不具备的典型特征是 A.断裂基因 B.重复序列 C.单顺反子转录产物D.多顺反子转录产物 E.转录产物的剪接加工3.为氨基酸编码的密码子具有简并性是指 A.一种tRNA可以携带一种氨基酸 B.一种氨基酸可以有几种
