【判断题】某些细菌能通过其细胞膜摄取周围的供体DNA片段,并将此外源DNA片段通过重组参入到自己的染色体组,此过程称为性导。
【单选题】某些细菌能通过其细胞膜摄取周围供体的染色体片段,并将此外源DNA片段通过重组参入到自己染色体组,这个过程称为()
【判断题】食品是指各种供人食用或者饮用的成品和原料、按照传统既是食品又是药品的物品及以治疗为目的的物品。
【简答题】Why do we read poetry? First obvious one: because we enjoy it. The only other reason is for academic purposes, and that's not why this is here. Many of us read poetry simply because we often feel depr...