Autotrophic or Mixotrophic Autotrophic chemolithotrophs:obtain their carbon from CO,化能无机自养生物 Mixotrophic chemolithotrophs:obtain energy form an inorganic compound,but require an organic compound as carbon source.化能无机异养营养生物：能量来自无机 物，但碳源来自有机物 Chen Feng,Microbiology,SJTUChen Feng, Microbiology, SJTU Autotrophic or Mixotrophic Autotrophic chemolithotrophs: obtain their carbon from CO2.化能无机自养生物 Mixotrophic chemolithotrophs: obtain energy form an inorganic compound, but require an organic compound as carbon source. 化能无机异养营养生物:能量来自无机 物, 但碳源来自有机物