Gram-positive bacteria can be differentiated from Gram-negative bacteria since the peptidoglycan layer comprises 10% of the cell wall

Which of the following components can be recognized by phages as receptors for Escherichia coli? (). A: Lipopolysaccharide B: Peptidoglycan C: Flagellum D: Pili

参与peptidoglycan生物合成的高能磷酸化合物是（） A: ATP B: GTP C: UTP D: CTP

Which<br/>of the following components can be recognized by phages as receptors<br/>for Escherichia coli?()(、C、D)。 A: lipopolysaccharide B: peptidoglycan C: flagella D: fimbriae

下列何者为革兰氏阴性细菌与革兰氏阳性细菌的主要差异 ?<br/>____ A: 荚膜( capsule) B: 鞭毛( flagella) C: 脂质 A(lipid A) D: 胜肽聚醣( peptidoglycan)

下列那一项物质存在革兰氏阴性细菌中,而不存在革兰氏阳性细菌中?____ A: 胜肽聚糖(peptidoglycan) B: 脂质A(lipid A) C: 荚膜(capsule) D: 血小板数目降低