Chemosynthetic bacteria are bacteria that make food through chemosynthesis. Chemosynthesis is a process that converts carbon molecules and nutrients into organic matter by oxidizing inorganic molecules. Chemosynthesis takes carbon dioxide, water, hydrogen sulfide, and oxygen to make formaldehyde and sulphuric acid. By this process, these chemosynthetic bacteria don't need any sunlight to make energy. Chemosynthetic bacteria are one of the oldest life forms on Earth and most are found near the hydrothermal vents deep underwater. These microbes are relatively important to the hydrothermal vent community because without them, the vent organisms could not get any food and they would die. Without these chemosynthetic bacteria, there would be no organisms near hydrothermal vents and there wouldn't be a chemosynthetic cycle.
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