鞭毛（）。 A: B: CApsulE C: D: flAgEllum E: F: pilus G: H: sporE I: J: tEiChoiCACiD

Which structure can help bacterium to settle down in host ( ) A: metachromatic granules B: spore C: lipopolysaccharide D: pilus

必须用电镜才能观察的细菌结构是 A: capsule B: flagellum C: pilus D: spore E: metachromatic-granule

Which form is transformation ( ) A: genetic substance was transmitted from donor bacterium to receptor bacterium by F pilus B: genetic substance was transmitted from donor bacterium to receptor bacterium by vector phage C: Free DNA segment from donor bacterium directly was ingested into receptor bacterium D: prophage was integrated into bacterial chromosome

有关细菌性菌毛说法不对的是 A: 英文名称是pilus,复数pili，又称性毛 B: 构造与成分与菌毛不相同，且比菌毛长，每个细胞仅一至少数几根 C: 一般见于G-细菌的雄性菌株（供体菌）中，具有向雌性菌株（受体菌）传递遗传物质的作用 D: 有的还是RNA噬菌体的特异性吸附受体