第一章测试1.All of the following amino acids are acidic or basic amino acids, EXCEPT（ ）.
A:Lys B:Ser C:Glu D:Asp
答案:B
2.The amino acids that determine the UV-absorbing properties of proteins are（ ）.
A:Histidine, Proline, Phenylalanine B:Histidine, Tryptophan, Phenylalanine C:Phenylalanine, Proline, Tyrosine D:Tryptophan, Phenylalanine, Tyrosine
答案:D
3.The protein molecule (PI=4.5) will mobile to the negative electrode when the PH of electrophoresis buffer is（ ）.
A:PH=7.0 B:PH=3.0 C:PH=4.5 D:PH=5.0
答案:B
4. Gel filtration chromatography is a method that can be used to separate and purify proteins, basing on the solubility of proteins（ ）
A:对 B:错
答案:B
5.What is primary structure of protein? Please state the relationships between the primary structure and
functions of proteins by an example.
答案:
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