Autotrophs that use chemosynthesis

Top 10 unbelievable historical concurrencies Chemosynthesis is a process certain organisms use to obtain energy for the production of food, akin to photosynthesis, but without the use of sunlight.

Autotrophs produce their own sugars, lipids, and amino acids using carbon dioxide as a source of carbon, and ammonia or nitrates as a source of nitrogen. Ad Chemosynthesis uses oxidation-reduction reactions, also known as Autotrophs that use chemosynthesis reactions, to supply the energy required to manufacture carbohydrates out of carbon dioxide and water.

They consist of streams of hot, chemical-rich water pouring out from the ocean floor in geologically active areas, such as mid-oceanic ridges. They have various adaptations that enable them to survive, such as unusual enzymes that are not deactivated by high temperatures.

What Is the Source of Energy for Chemosynthesis?

Some organisms that rely on chemosynthesis to derive the energy they need include nitrifying bacteria, sulfur-oxidizing bacteria, sulfur-reducing bacteria, iron-oxidizing bacteria, halobacterium, bacillus, clostridium, and vibrio, among others.

Chemosynthesis and Other Planets The ability of some chemosynthetic organisms to thrive in extreme conditions has led some scientists suggest that such life forms might exist on other planets, in environments that would not be suitable for more familiar types of life.

Compared with other autotrophic microorganisms, hydrogen bacteria have a high growth rate and may produce a large biomass; they are also able to grow on mediums containing organic matter, that is, they are mixotrophic or facultatively chemoautotrophic. These organisms are termed based on the conditions in which they grow, thus, some are thermophiles, psychrophiles, acidophiles, halophiles, etc.

Chemosynthetic bacteria, unlike plants, obtain their energy from the oxidation of inorganic molecules, rather than photosynthesis. Larger predators then eat these. Jump to navigation Jump to search Look up autotroph in Wiktionary, the free dictionary. Overview of cycle between autotrophs and heterotrophs.

Extremophiles are organisms that can live in very harsh environments. The bacteria synthesize methane by combining hydrogen and carbon dioxide. Click the link for more information.

Preliminary findings are that these bacteria subsist on the hydrogen produced by chemical reduction of olivine by seawater circulating in the small veins that permeate the basalt that comprises oceanic crust.

In bacteria capable of chemoautotrophy a form a chemosynthesissuch as purple sulfur bacteria [4]yellow globules of sulfur are present and visible in the cytoplasm.

Plants, algae, and bacteria have the ability to use sunlight, water, and carbon dioxide CO2 and convert them into organic compounds necessary for life in a process called photosynthesis. Some, for example, Thiobacillus ferrooxidans, oxidize sulfide minerals and ferrous oxide.

Habitats for chemosynthetic bacteria are usually found in the ocean depths, where a mineral soup is leaking out of the seafloor via thermal vents.


Chemosynthetic bacteria are not strictly a taxonomic group; they are classified according to the inorganic substrate they oxidize. All living organisms obtain their energy in two different ways. Organisms living in regions where sunlight is not available produce their energy by the process of chemosynthesis.See also autotroph autotroph, in biology, an organism capable of synthesizing its own organic substances from inorganic compounds.

Autotrophs produce their own sugars, lipids, and amino acids using carbon dioxide as a source of carbon, and ammonia or nitrates as a source of nitrogen. Bacteria living in aphotic areas of the ocean are able to survive by chemosynthesis.

They use energy derived from the oxidation of inorganic chemicals, such as sulfur released from deep hydrothermal vents, to produce their food. An autotroph or producer, is an organism that produces complex organic compounds (such as carbohydrates, fats, and proteins) from simple substances present in its surroundings, generally using energy from light (photosynthesis) or inorganic chemical reactions (chemosynthesis).

60 rows · Some rare autotrophs produce food through a process called. In biochemistry, chemosynthesis is the biological conversion of one or more carbon-containing molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic compounds (e.g., hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis.

Chemosynthesis is the oldest way for organisms to produce food. In the oceans or hot lakes, chemosynthetic bacteria constitute the basis of an ecosystem, where bacteria live in the mud of the ocean floor or inside larger animals, such as snails or limpets.

Autotrophs that use chemosynthesis
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