Cell differentiation and regulation

Quiz
•
Biology
•
9th - 12th Grade
•
Hard

yawen Hou
Used 1+ times
FREE Resource
24 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列由奢侈基因编码表达的是
DNA聚合酶
肌动蛋白
葡萄糖载体蛋白
晶状体蛋白
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
关于细胞分化的分子生物学机制,下列说法不正确的是
细胞表型特化的分子基础是特异性蛋白质的合成
已经分化的细胞仍旧具有全能性
细胞分化是基因选择性表达的结果
细胞分化的选择性表达是在mRNA水平上的调节
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
维持细胞生存所必需的最基本的基因是
管家基因
结构基因
调节基因
奢侈基因
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
基因调控包括哪些方面?(多选题)
转录水平
转录后水平
翻译水平
翻译后水平
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
下列哪些属于前体mRNA的加工修饰?(多选题)
5’端加甲基化修饰的帽
3’端加polyA尾巴
剪去内含子,将外显子拼接在一起
形成一定的空间结构以便于核糖体能结合
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列关于蛋白质合成与加工正确的是(多选题)
mRNA作为蛋白质合成的模板,其碱基序列信息可以转换为氨基酸序列信息
tRNA作为氨基酸的运载体,将氨基酸运到核糖体上
rRNA作为核糖体的组成成分,对肽键的形成起到催化作用
在游离核糖体上合成的多肽链可在细胞质基质中在分子伴侣的协助下形成一定的空间结构
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列关于Bicoid基因的说法,正确的是
Bicoid基因转录出的mRNA定位于卵细胞的后端
Bicoid mRNA属于决定子
Bicoid mRNA在卵受精后才翻译出Bicoid蛋白
Bicoid蛋白在细胞中建立的浓度梯度可诱导核基因的选择性表达
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