上泽充通大￥ Shanghai Jiao Tong University I.Nutrition and Culture of Microorganisms A key feature of cells is their ability to direct chemical reactions and organize molecules into specific structures:metabolism. © Metabolic reactions are either energy releasing, called catabolic reactions,or energy requiring. called anabolic reactions.代谢包括了异化作用 (释放能量)和同化作用（需要能量）两种. Shanghai Jiao Tong UniversityShanghai Jiao Tong University I. Nutrition and Culture of Microorganisms A key feature of cells is their ability to direct chemical reactions and organize molecules into specific structures: metabolism. Metabolic reactions are either energy releasing, called catabolic reactions, or energy requiring, called anabolic reactions.代谢包括了异化作用 (释放能量)和同化作用(需要能量)两种