formation of organic compounds with energy derived from inorganic substances such as ammonia, sulfur and hydrogen
The process by which certain organisms use the energy derived from chemical reactions to sustain their metabolism. See Photosynthesis.
Primary production of organic matter, derived from inorganic substances such as ammonia, sulfur and hydrogen. This is confined to a few groups of microorganisms.
The process by which bacteria can transform inert, toxic chemicals into energy and nutrients.
fixation of carbon from CO2 into organic compounds using energy from oxidation of inorganic compounds such as ammonia, methane, and hydrogen sulfide. Compare with photosynthesis
Synthesis of organic compounds using energy derived from chemical reactions.
synthesis of carbohydrate from carbon dioxide and water; limited to certain bacteria and fungi
process by which inorganic molecules are used to form energy-rich bonds in carbohydrates
production of food using the energy contained in inorganic molecules.
the process of using the energy derived from inorganic compounds to convert carbon dioxide and water into carbohydrates; carried out by some bacteria
a biological process by which an organism uses the energy from the oxidation of inorganic substances such as ammonia, sulfur, and hydrogen to form organic compounds. Unlike photosynthesis, chemosynthesis does not require sunlight, so this process can occur at great depths in the ocean.
The process by which microorganisms use energy produced during chemical reactions to produce food from carbon dioxide and water.
Synthesis of organic compounds (as in living cells) by energy derived from chemical reactions.
The process of using chemical energy to create food.
The process by which microbes mediate chemical reactions to produce into energy. In contrast to photosynthesis, because chemosynthesis does not require sunlight.
The use of chemical energy rather than sunlight as the energy source for the production of organic compounds from inorganic sources.
a chemical reaction that bacteria living near hydrothermal vents use to produce food
The production of organic material by energy from chemical reactions rather than light. Hydrogen sulfide is to chemosynthesis what sunlight is to photosynthesis. The oxidation of hydrogen sulfide to sulfate furnishes vent bacteria with the energy needed to produce organic matter. Compare to photosynthesis.
The synthesis of organic molecules by certain bacteria that use the energy released by specific inorganic molecules.
the process by which bacteria use energy from chemicals, such as hydrogen sulfide, to combine water and carbon dioxide to produce carbohydrates
type of metabolism carried out by only a few kinds of bacteria and archaea in which chemical forms of energy (such as hydrogen gas, hydrogen sulfide and iron) are used to make cell material
process in which certain organisms (mostly specialized bacteria) extract inorganic compounds from their environment and convert them into organic nutrient compounds without the presence of sunlight. Compare photosynthesis.
the process by which some bacteria use chemicals (like hydrogen sulfide) to provide the energy they need for life.
Process in which specific autotrophic organisms extract inorganic compounds from their environment and convert them into organic nutrient compounds without the use of sunlight. Also see photosynthesis.
Obtaining energy from inorganic substances
Chemosynthesis is the biological conversion of 1-carbon molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis. Large populations of animals can be supported by chemosynthetic primary production at hydrothermal vents, methane clathrate cold seeps, and whale falls. Chemoautotrophs, organisms that obtain carbon through chemosynthesis, are responsible for the primary production in oxygen-deficient environments, generally fall into four groups: methanogens, halophiles, sulfur reducers, and thermoacidophiles.