2024智慧树网课答案分子生物学（Molecular Biology) 最新完整智慧树知到满分章节测试答案

文章目录[隐藏]

第一章单元测试
第二章单元测试
第三章单元测试
第四章单元测试
第五章单元测试
第六章单元测试
第七章单元测试
第八章单元测试
第九章单元测试
第十章单元测试
第十一章单元测试

第一章单元测试

1、问题: The Nucleic acid will get maximum UV absorbance at wavelength_____（）
选项：
A:260nm
B:280nm
C:230nm
D:270nm
答案: 【
260nm
】

2、问题: The common component composed of DNA and RNA is _____（）
选项：
A:D-ribose
B:D-2-deoxyribose
C:Guanine
D:Thymine
答案: 【
Guanine
】

3、问题: The secondary structure of DNA is _____（）
选项：
A:α-helix
B:double helix
C:β-sheet
D:β-turn
答案: 【
double helix
】

4、问题:

The corresponding anticodon to codon ACG is___ （）

选项：
A:UGC
B:CGU
C:GCA
D:CGT
答案: 【
CGU
】

5、问题: Single strand DNA 5’-CGGTA-3’ can anneal with the follow RNA _____（）
选项：
A:5’-GCCAT-3’
B:5’-GCCAU-3’
C:5’-UACCG-3’
D:5’-TAGGC-3’
答案: 【
5’-UACCG-3’
】

6、问题: mRNA is used as _____ in translation.（）
选项：
A:template
B:adaptor
C:machinery
D:None
答案: 【
template
】

7、问题: Amount of T in RNA is 0.25mol，so amount of A is_____. （）
选项：
A:0.25mol
B:0.5mol
C:0.75mol
D:1.00mol
答案: 【
0.25mol
】

8、问题: tRNA in eukaryotic cell contains _____（）
选项：
A:5sRNA
B:5.8sRNA
C:18sRNA
D:28sRNA
答案: 【
5sRNA
5.8sRNA
18sRNA
28sRNA
】

9、问题: The base in DNA _____（）
选项：
A:A
B:T
C:C
D:G
答案: 【
A
T
C
G
】

10、问题: Stem-loop is a type of secondary structure not usually found in tRNA.（）
选项：
A:对
B:错
答案: 【
对
】

11、问题: All genomes are composed of RNA.（）
选项：
A:对
B:错
答案: 【
错
】

第二章单元测试

1、问题: Sequences that are removed from the primary RNA transcript in eukaryotes are called__.（）
选项：
A:introns
B:operons
C:exons
D:mRNA
答案: 【
introns
】

2、问题: Which character is not true for eukaryotic genes?（）
选项：
A:Eukaryotic gene structure is discontinuous
B:All the protein-coding genes in higher eukaryotes have introns.
C:There is a highly conserved sequence at the junction of exon and intron.
D:Genes of rRNA and some tRNA have introns too.
答案: 【
All the protein-coding genes in higher eukaryotes have introns.
】

3、问题: Which is not a feature of enhancer？（）
选项：
A:It can enhance the promoter in any direction and at any location
B:The distance between enhancer sequences and regulated genes varies a lot.
C:Sometimes enhancer sequences can also be located within introns.
D:A gene often has only one enhancer.
答案: 【
A gene often has only one enhancer.
】

4、问题: The regulators of eukaryotic gene expression consist of__.（）
选项：
A:promoter
B:enhancer
C:silencer
D:insulator
答案: 【
enhancer
silencer
insulator
】

5、问题: All housekeeping genes have weak promotors and are regulated to maintain their gene
products at constant low level concentrations.（）
选项：
A:对
B:错
答案: 【
错
】

第三章单元测试

1、问题: Based on Meselson-Stahl experiment, each daughter DNA molecule is composed of（）
选项：
A:two old parental strands
B:two new daughter strands
C:one old and one new strand
D:two strands with both new and old DNA
答案: 【
one old and one new strand
】