[名词解释] cellulose (纤维素)
[名词解释] 喷菌现象(bacteria exudation,BE)
[单选题]The passage implies that cellulose is a very porous substance because it contains______.A.a substance that creates pressureB.millions of tiny holesC.a substance that dissolves itD.liquid medicine
[名词解释] 细菌 bacteria
[名词解释] Bacteria, eubacteria (真细菌)
[名词解释] 柄细菌(prosthecate bacteria)
[单选题]生活在反刍动物胃内的纤维素分解菌,其新陈代谢类型是()A . 自养需氧型B . 异养厌氧型C . 异养需氧型D . 自养厌氧型
[单选题]When anaerobic bacteria convert the sewage to an inert sludge, .A.no oxygen is neededB.oxygen is necessaryC.oxygen is given offD.no gas is produced
[填空题] 大多数志贺菌不分解乳糖,只有()志贺菌能分解乳糖.
[单选题]土壤中的纤维分解菌与自生固氮菌之间由于前者为后者提供碳源,后者为前者提供氮源而构成了()。A .偏利共栖关系B .互利共栖关系C .共生关系D .寄生关系