Nitrifying bacteria can oxidize ammonia into nitrous acid and then into nitric acid, and in this process, they will generate energy for their own life activities, and the energy obtained from them will oxidize carbon dioxide and water into organic matter.

Therefore, nitrifying bacteria are autotrophs. (Oxidizing inorganic substances in the environment into organic substances)

In addition, nitrifying bacteria are prokaryotes and have no endoplasmic reticulum! ! !

There are no complex organelles such as Golgi apparatus, mitochondria, endoplasmic reticulum and chloroplast in the cytoplasm of nitrifying bacteria, but there are ribosomes. )