传媒专业留学哪个学校好？
我们现在比以往任何时代都更容易了解周围世界，获悉各种动态，传播各种信息。这所有的一切得益于传媒行业的蓬勃发展。传媒一直以来都是留学的热门专业，中国学生最常选择的目的地包括美国、英国、香港、韩国等。...
CIE A Level Biology复习笔记19.2.1 Recombinant Human Proteins
Recombinant Human Proteins DNA that has been altered by introducing nucleotides from another source is called recombinant DNA (rDNA) If the organism contains nucleotides from a different species it...
CIE A Level Biology复习笔记19.1.11 Bioinformatics
Bioinformatics The various technologies (eg. microarrays and gene sequencing) being used today to analyse genes and proteins generate enormous quantities of data The data being collected ranges fro...
CIE A Level Biology复习笔记19.1.10 Microarrays
Microarrays Microarrays are laboratory tools used to detect the expression of thousands of genes at the same time and to identify the genes present in an organism’s genome Microarrays are used in m...
CIE A Level Biology复习笔记19.1.9 Gel Electrophoresis
Gel Electrophoresis Gel electrophoresis is a technique used widely in the analysis of DNA, RNA and proteins. During electrophoresis the molecules are separated according to their size / mass and th...
CIE A Level Biology复习笔记19.1.8 Polymerase Chain Reaction
Polymerase Chain Reaction (PCR) Polymerase chain reaction (PCR) is a common molecular biology technique used in most applications of gene technology, for example, DNA profiling (eg. identification ...
CIE A Level Biology复习笔记19.1.7 Gene Editing
Gene Editing Gene genome editing (or editing) allows genetic engineers to alter the DNA of organisms by inserting, deleting or replacing DNA at specific sites in the genome known to cause disease. ...
CIE A Level Biology复习笔记19.1.6 Genetic Engineering: Promoters & Marker Genes
Genetic Engineering: Promoter The promoter (an example of a length of non-coding DNA that has a specific function) is the region of DNA that determines which gene will be expressed. This is because...
CIE A Level Biology复习笔记19.1.5 Genetic Engineering: Vectors
Genetic Engineering: Vectors Vectors are used to transfer the desired genes into a foreign cell Plasmids are the most commonly used vector but viruses and liposomes (a small vesicle with a phosphol...
CIE A Level Biology复习笔记19.1.4 Genetic Engineering: Enzymes
Genetic Engineering: Enzymes Genetic engineering is the deliberate modification of a specific characteristic (or characteristics) of an organism. The technique involves removing a gene (or genes), ...
CIE A Level Biology复习笔记19.1.3 Isolating the Desired Gene
Isolating the Desired Gene The gene with the specific characteristic that is required can be obtained in the following ways: Extracting the gene from the DNA of a donor organism using enzymes (rest...
CIE A Level Biology复习笔记19.1.2 Genetic Engineering
Genetic Engineering Explained Genetic engineering is a technique used to deliberately modify a specific characteristic (or characteristics) of an organism. The technique involves removing a gene (o...
