When the DNA is extracted, the function of protease K is to degrade the membrane protein, degrade the protein bound to the DNA so that free the DNA fully.
正确
举一反三
- The operator is A: Another name for the terminator of a gene B: A DNA site bound by repressor proteins C: A protein that coordinates gene expression D: A part in the leader region of mRNA
- 对比外在膜蛋白(extrinsic membrane protein)与内在膜蛋白(intrinsic membrane protein)
- The genetic material of a bacteria is located in the molecule A: RNA B: DNA C: protein D: lipid
- Butyrate can function as ： A: protein methylation B: Protein acetylation C: Protein phosphorylation D: Protein deacetylation
- Operator: ( ) A: An operator is a DNA region that is working with promoter for genes to express. B: An operator is a DNA region at 5’ of a gene for a repressor to bind to prevent gene expression. C: An operator is a repressor protein to help genes to express. D: An operator is a repressor protein to inhibit genes to express.
内容
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膜运输蛋白（membrane transport protein）
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The<br/>actions of alkylating agents:( ) A: are<br/>cell-cycle dependent B: Cause<br/>cross-linking of DNA strands C: Inhibit<br/>DNA synthesis D: Inhibit<br/>protein synthesis
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Many large structures, such as viruses and ribosomes, are built from a mixture of one or more types of protein plus RNA or DNA molecules.
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参与DNA复制的某些酶:1,DNA指导的DNA聚合酶Ⅲ;2,解链蛋白(unwinding<br/>protein);,3, DNA聚合酶I;4,引物酶;5, DNA连接酶。在DNA合成时它们作用的正确顺序是()。 A: 4,3,1,2,5 B: 2,3,4,1,5 C: 4,2,1,5,3 D: 4,2,1,3,5 E: 2,4,1,3,5
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This receptor family contains ________________. Choose the best expression below. A: protein A, B, C and so on B: several members, including protein A, B, C C: protein A, B, C etc. D: protein A, B, C, and so forth