染色体的主要组成成分是( ) A.DNA和RNA   B.RNA和蛋白质 C.DNA和

染色体的主要组成成分是(  )

ADNARNA   BRNA和蛋白质 CDNA和蛋白质       D.糖类和蛋白质

答案

解:染色体的主要组成成分是DNA和蛋白质,C正确,ABD错误.

故选:C

 

相关题目

执行如图所示的程序框图,若输出的结果是,则输入的a为( )
执行如图所示的程序框图,若输出的结果是,则输入的a为( ) A.5                                    B.6 C.7                
若集合A={},集合B={};(1)证明:A与B不可能相等;w.w.w.k.
若集合A={},集合B={};(1)证明:A与B不可能相等;w.w.w.k.s.5.u.c.o.m    (2)已知p:,q:,若p是q的必要不充分条件,求实数m的取值范围. 
 _____ I have to walk all the way, I’ll still go there. A. Even    B. Ev
 _____ I have to walk all the way, I’ll still go there. A. Even    B. Even though    C. As though   D. Now that
On yesterday interview, he didn’t make a at all; what’s the matter with him
On yesterday interview, he didn’t make a at all; what’s the matter with him? A. apology       B. appearance     C. difference      D. change  
已知集合,,,全集为实数集. (1) 求; (2) 若,求实数的范围
已知集合,,,全集为实数集. (1) 求; (2) 若,求实数的范围.
You can love them or hate them, but no matter which tourist destination you visi
You can love them or hate them, but no matter which tourist destination you visit, chances are that you’ll see someone with their head buried in a Lonely Planet guidebook.    Lonely Planet is one
单项填空 – Hi Peter. Do you know Oxford?    -Yes. It is ______ universi
单项填空 – Hi Peter. Do you know Oxford?    -Yes. It is ______ university in England. ______ university is world-famous. A. a; A                B. a; The            
铀(U)常见化合价有+4价和+6价,硝酸铀酰[UO2(NO3)2]加热可发
铀(U)常见化合价有+4价和+6价,硝酸铀酰[UO2(NO3)2]加热可发生如下反应:UO2(NO3)2UxOy+NO2↑+O2↑(化学方程式未配平),在600 K时将气体产物集满试管,并

最新题目