大学MOOC 分子生物学(江苏科技大学)1003536039 最新慕课完整章节测试答案

分子生物学简介随堂测试

1、单选题：
‏The idea of "each parent contributes particles or genetic unites to the offspring" was first proposed by: ‌
选项：
A: Morgan
B: Mendel
C: Avery
D: Watson
答案: 【 Mendel】

2、判断题：
‌Molecular biology is a study of gene structure and function at the molecular level.‍
选项：
A: 正确
B: 错误
答案: 【 正确】

基因功能概论随堂测验

1、判断题：
‏proteins are the final products of most genes​
选项：
A: 正确
B: 错误
答案: 【 正确】

2、判断题：
‍‎The tertiary structures of
peptides usually have two forms,α helix and β sheet.
选项：
A: 正确
B: 错误
答案: 【 错误】

核酸随堂测验

1、多选题：
What are the properties of genetic materials? ‎​‎
选项：
A: It must be able to hold information for how to make proteins
B: it must be stable
C: it must have some capacity for change.
D: it must be able to be copied.
答案: 【 It must be able to hold information for how to make proteins;
it must be stable;
it must have some capacity for change. ;
it must be able to be copied.】

2、判断题：
​When nucleotides are polymerized, the triphosphate group of one nucleotide reacts with the 3’-OH (hydroxyl) group of another nucleotide.‍
选项：
A: 正确
B: 错误
答案: 【 正确】

乳糖操纵子随堂测验

1、判断题：
‍transcription of the lac operon is weak when cAMP levels are low.‌
选项：
A: 正确
B: 错误
答案: 【 正确】

原核生物转录机理测验

1、判断题：
‍During transcription, the newly produced mRNA molecule is a perfect complement of the template strand.‌
选项：
A: 正确
B: 错误
答案: 【 正确】

2、判断题：
‌The  core enzyme of RNA polymerase can recognize the promoter accurately so that transcription can begin in
the right place.‏
选项：
A: 正确
B: 错误
答案: 【 错误】

色氨酸操纵子随堂测验

1、单选题：
‏When tryptophan levels in the cell are low,            .‍
选项：
A: the ribosome slows down while translating the leader region.
B: the terminating hairpin loop forms
C: the ribosome never attaches to the leader region
D: the ribosome continues transcription of the trp operon without stopping
答案: 【 the ribosome slows down while translating the leader region.】

2、判断题：
​The trp operon also appear in eukaryotes.‌
选项：
A: 正确
B: 错误
答案: 【 错误】

特异转录因子与转录调控随堂测验

1、判断题：
‌Activators and repressors are proteins, enhancers and silencers are DNA sequences. ‎
选项：
A: 正确
B: 错误
答案: 【 正确】

2、判断题：
​an repressor can recruit enzyme that loosens DNA from nucleosome‍
选项：
A: 正确
B: 错误
答案: 【 错误】

特异转录因子结构随堂测验

1、单选题：
‌which of the follwing motifdcontains a beta-sheet?‍
选项：
A: zinc finger
B: helix-turn-helix
C: helix-loop-helix
D: leucine zipper
答案: 【 zinc finger】

2、判断题：
‍Most
DNA-binding proteins recognize specific DNA sequences at the major
groove​
选项：
A: 正确
B: 错误
答案: 【 正确】

真核RNA聚合酶与启动子随堂测验

1、单选题：
‏Which of the following elements is no included in eukaryotic promoter?‎
选项：
A: the TATA box
B: the initator
C: the -10 box
D: DPE
答案: 【 the -10 box】

2、判断题：
‌Eukaryotes
use three different RNA polymerases, each of them transcribes different classes
of genes‎
选项：
A: 正确