下列关于RNA的叙述,不正确的是 A.RNA是一种遗传物质          

下列关于RNA的叙述,不正确的是

A.RNA是一种遗传物质            B.RNA催化细胞某些生化反应

C.RNA参与构成核糖体                 D.RNA参与构成细胞膜

答案

D

相关题目

倾角的粗糙斜面位于水平地面上,质量的木块置于斜面顶端
倾角的粗糙斜面位于水平地面上,质量的木块置于斜面顶端,从静止开始匀加速下滑,经到达底端,运动路程L=4,在此过程中斜面保持静止(=0.6,求
We have a nice classroom. It’s one of ________ in our school. A. bigger class
We have a nice classroom. It’s one of ________ in our school. A. bigger classrooms       B. biggest classroom    C. the biggest classrooms  D. the bigger classroom 
下列说法不正确的是( ) A.鱼类身体呈梭形,体表大多覆
下列说法不正确的是( ) A.鱼类身体呈梭形,体表大多覆盖着鳞片,用鳃呼吸 B.蝌蚪生活在水中,用鳃呼吸,青蛙也只是用鳃呼吸 C.家鸽体内有气
若函数在区间上是减函数,在区间上是增函数,求实数的取
若函数在区间上是减函数,在区间上是增函数,求实数的取值范围。
 I travel a lot in my work, and what I dislike about my job is eating alone. I
 I travel a lot in my work, and what I dislike about my job is eating alone. It always makes me feel lonely to see others laughing and talking. So, room service for several nights was a better cho
I’m leaving for _____ one-year English course . A.a           B.an 
I’m leaving for _____ one-year English course . A.a           B.an          C.\            D.the  
近年来,屡屡有这样的报道:以美国为首的北约国家对伊拉
近年来,屡屡有这样的报道:以美国为首的北约国家对伊拉克发动进攻或进行军事制裁,请问,北约成立于哪一年 ( ) A.1955年          B.1945
Go on _______ the other exercise after you have finished this one. A. to do  
Go on _______ the other exercise after you have finished this one. A. to do       B. doing            C. with        D. to be doing        

最新题目