题目内容

物联网是一种非常复杂、形式多样的系统技术 。根据信息生成、传输、处理和应用的原则,可以把物联网分为4层:()、网络构建层、管理服务层和()。

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Cell lysis is carried out by which substance? __________

A. Lysozyme and detergents
B. Water
C. Sugar solution
D. Suphuric Acid

Proteins can be removed via treatment by? __________

A. Phenol and chloroform treatment
B.Treatment with sodium hydroxide
Chloroform treatment alone
D. Centrifuging

Nucleic acid precipitated constitutes of ____________

A.plasmid DNA
B.plasmid DNA, along with RNA and chromosomal DNA
C.RNA alone
D.chromosomal DNA only

The nucleic acid remaining in the solution can be precipitated by addition of sodium or ammonium acetate and ethanol. ____________

A.False
B.True

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