Most chemoautotrophic bacteria, Acetobacter, Bacillus subtilis, Mycobacterium tuberculosis, nitrifying bacteria, rhizobia (nitrogen-fixing bacteria) and cyanobacteria, although these prokaryotes have no mitochondria, have a complete set of enzymes related to aerobic respiration, which are distributed in the cytoplasm matrix and cell membrane, so these cells can carry out aerobic respiration.