生物工程,也称作“生物技术”或“生物工艺学”。它是指应用现代生物学、化学和工程学的手段来直接利用生物体或其组成成分,以提供商品或为社会服务的一门科学技术。现在,生物工程的内容大致包括基因工程、细胞工程、酶工程和发酵工程等四个方面。基因工程是指利用DNA重组技术,通过从生物体分离遗传物质DNA(基因),并用工具酶对其剪切、拼接,以获得人工重组的DNA,再转入宿主细胞内进行大量复制,并 Bioengineering, also known as “biotechnology” or “biotechnology.” It refers to the use of modern biological, chemical and engineering means to directly use the organism or its components to provide goods or serve the community a science and technology. Now, the content of bioengineering generally includes four aspects of genetic engineering, cell engineering, enzyme engineering and fermentation engineering. Genetic engineering refers to the use of DNA recombinant technology, by separating the genetic material DNA (organism) from the organism, and cutting it with a tooling enzyme to spliced, to obtain artificial recombinant DNA, which is then transferred into host cells for extensive replication and