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【单选题】
一个国家要在国际上确立起主权国家的地位，维护国家的尊重和独立，除了要有一定的经济实力以外，还必须具备强大的()。如果没有强大的国防力量那就会被动挨打受欺负。A.
生产力
B.
经济理
C.
人民币
D.
国防力量
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皮皮学刷刷变学霸
举一反三
【单选题】By fusing the gene encoding a protein under study with the gene for an epitope tag, investigators can precipitate the protein product of the fusion gene by complexing it with the antibody that binds t...
A.
precipitation
B.
immunoprecipitation
C.
protein precipitation
D.
antigen precipitation
【单选题】If fusion to green fluorescence protein (GFP) does not impair the function or properties of a protein one wishes to study, the fusion protein can be used to reveal the protein’s ________ in the cell u...
A.
structure
B.
folding
C.
location
D.
partners
【单选题】The gene for almost any protein can be altered to express a fusion protein that can be purified by affinity chromatography. The peptide or protein used for this purpose is referred to as a tag. Which ...
A.
The gene encoding the target protein is fused to a gene encoding a peptide or protein that binds a large, unstable ligand with high affinity and specificity.
B.
Tag sequences can be added to genes such that the resulting proteins have tags at their amino or carboxyl terminus.
C.
Even very small tags can affect the properties of the proteins they are attached to, thereby influencing the study results.
D.
Even if the tag is removed by a protease, one or a few extra amino acid residues can remain behind on the target protein, which may or may not affect the protein’s activity.
【多选题】计算内墙面抹灰工程量时,( )的面积与内墙面合并计算。
A.
门洞口侧壁和顶面
B.
窗洞口侧壁、顶、底面
C.
墙垛侧壁面积
D.
附墙烟囱侧壁面积
E.
单个面积 0.3m 2 以上孔洞
【简答题】A fusion protein can easily be isolated by ____________________ chromatography.
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