

1、单选题:
The Nucleic acid will get maximum UV absorbance at wavelength_____( )
选项:
A:230nm
B:260nm
C:280nm
D:270nm
答案: 【260nm】
2、单选题:
The common component composed of DNA and RNA is _____( )
选项:
A:Guanine
B:D-ribose
C:D-2-deoxyribose
D:Thymine
答案: 【Guanine】
3、单选题:
The secondary structure of DNA is _____( )
选项:
A:α-helix
B:double helix
C:β-turn
D:β-sheet
答案: 【double helix】
4、单选题:
The corresponding anticodon to codon ACG is___ ( )
选项:
A:CGT
B:UGC
C:GCA
D:CGU
答案: 【CGU】
5、单选题:
Single strand DNA 5’-CGGTA-3’ can anneal with the follow RNA _____( )
选项:
A:5’-TAGGC-3’
B:5’-UACCG-3’
C:5’-GCCAT-3’
D:5’-GCCAU-3’
答案: 【5’-UACCG-3’】
6、单选题:
mRNA is used as _____ in translation.( )
选项:
A:template
B:adaptor
C:machinery
D:None
答案: 【template】
7、单选题:
Amount of T in RNA is 0.25mol,so amount of A is_____. ( )
选项:
A:0.5mol
B:1.00mol
C:0.75mol
D:0.25mol
答案: 【0.25mol】
8、多选题:
tRNA in eukaryotic cell contains _____( )
选项:
A:18sRNA
B:28sRNA
C:5sRNA
D:5.8sRNA
答案: 【18sRNA;
28sRNA;
5sRNA;
5.8sRNA】
9、多选题:
The base in DNA _____( )
选项:
A:G
B:C
C:T
D:A
答案: 【G;
C;
T;
A】
10、判断题:
Stem-loop is a type of secondary structure not usually found in tRNA.( )
选项:
A:对
B:错
答案: 【对】
11、判断题:
All genomes are composed of RNA.( )
选项:
A:对
B:错
答案: 【错】
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