✔ 最佳答案
Cometabolism is an approach to biological degradation of hazardous solvents. Using methane as the primary energy source, some microbes release enzymes that degrade the chlorinated solvents.
Cometabolism is defined as the simultaneous metabolism of two compounds, in which the degradation of the second compound (the secondary substrate) depends on the presence of the first compound (the primary substrate).
Example In English~
For example, in the process of degrading methane, some bacteria can degrade hazardous chlorinated solvents that they would otherwise be unable to attack.
中文例子~ =]
另一有趣的例子為Chlorobium，如果環境中有可利用之硫化氫及二氧化碳，Chlorobium便能利用光能，產生有機物質供應硫及甲酸鹽類，而二氧化碳、硫化氫由Spirillum供應，如此二者之間互相供應對方營養元素。在Chlorobium及Desulforvibrio二者之間，也有相同之關係，Desulforvibrio供Chlorobium二氧化碳及硫化氫，而Chlorobium供應Desulfovibrio有機物質，並移走有毒的硫化氫。在氮-循環也有相同作用，如Azotobacter族群在有足夠的有機碳時，可固定有機氮，讓其他土壤中微生物利用，並供Azotobacter所需要的有機物質。
