The nitrifying bacteria are chemosynthetic autotrophs . 硝化细菌是化能合成的自养生物。
2.
The fixation of co2 carried out by these autotrophs , in addition to atp , requires reduced pyridine nucleotide 除atp外，由这些自养生物进行的co2固定，需要还原的吡啶核苷酸。
3.
Autotrophic organisms ( autotrophs ) are important ecologically as primary producers , their activities ultimately supplying the carbon requirements of all heterotrophic organisms 自养生物体在生态学上是重要的初级生产者，它们的活动最终为所有的异氧生物体提供能量。
