1、生物常用原理技术总结 篇一:生物技术原理总结3 1.Prokaryotesaresmallandsimpleinstructure when compared with eukaryotes,yettheyoftenhavecharacteristicshapeandsize 与真核细胞相比原核细胞较小并且结构简单,但他们通常含有独特的形状和大小。 2.Prokaryoticgeneticmaterialislocatedinanareacalledthenucleoidandisnotenclosedbyamembrane
3、形状并且能保护细胞免受渗透压溶解作用。5.Bacterialwallsarechemicallycomplex and usually contain peptidoglycanormurein. 细菌细胞壁化学结构复杂通常含有肽聚糖和胞壁质。 6.BacteriaoftenareclassfiedaseithergrampositiveorgramnegativebasedondifferencesincellwallstructureandtheirresponsetoGramstaining.细菌依据它们细胞壁结构的不同和
4、对革兰氏染色的反应不同可分为革兰氏阳性菌和革兰氏阴性菌。Gram-positivewallshavethick,homogeneouslayersofpeptidoglycan and teichoid acid. Gram-negativebacteriahaveathinpeptidoglycanlayersurroundedbyacomplexoutermembranecontaininglipopolysaccharides and other components 革兰氏阳性菌有厚的均匀的肽聚糖层和磷壁酸层,革兰氏