Where and by what organisms does chemosynthesis occur

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. Therefore, to produce energy typically means to convert some stored energy into a desired form—for example, the stored energy of water behind a dam is released as the water flows downhill and drives a turbine generator to produce electricity, which is then delivered to users through distribution systems.

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.

The two reactions always occur together, but those used in chemosynthesis result in an overall release of energy. 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.


It is used in rate studies of several key processes. Chemosynthetic extremophile microorganisms have been found in hot springs, where they survive by the oxidation of sulfur or ammonia, and in rocks deep below the surface, where they obtain energy by oxidizing iron.

The process occurs in many bacteria, and in another group of organisms known as archaea. In blind experiments, real rates of microbial processes in natural ecosystems will not be attained unless the concentration of the added tracer substrate is significantly lower than the substrate content of the natural sample.

The life forms that use this method to obtain energy are found in a variety of environments, including soil, the intestines of mammals, petroleum deposits, and in extreme conditions, such as around hydrothermal vents on the ocean floor. A number of different methods have arisen, determined by the conditions, and the chemicals that are available.


Seafloor sediments show that during past ice ages, more iron-rich dust blew from chilly, barren landmasses into the oceans, apparently producing more algae in these areas and, presumably, a natural cooling effect. Methane oxidation also takes place in areas where petroleum — a mixture of hydrocarbons including methane — seeps upward into the sea floor.

Finally, the microbes release sulfur and water. The bacteria capture the energy from the sulfur and produces organic compounds for both the tube worm and the bacteria.

They consist of streams of hot, chemical-rich water pouring out from the ocean floor in geologically active areas, such as mid-oceanic ridges.

Photosynthesis vs. Chemosynthesis: What's the Difference?

Advertisement What is Chemosynthesis? Photosynthesis occurs only in green plants or in organisms which have chlorophyll while chemosynthesis occurs only in bacteria. Plants consume some water when other natural processes occur, and some water is used during the photosynthesis process.

The ecologies surrounding deep-sea vents are much richer than those further away from such chemical sources, which must survive solely on dead organic matter slowly descending from the waters above.Nitrogen-based Chemosynthesis In soils and in freshwater, chemosynthetic activity by nitrifying bacteria is vital to plant growth.

All organisms need nitrogen to make amino acids, but the most abundant species of nitrogen, atmospheric N 2, is a form that most organisms cannot take up.

Photosynthesis occurs only in green plants or in organisms which have chlorophyll while chemosynthesis occurs only in bacteria. Photosynthesis needs sun energy as an essential requirement while chemosynthesis does not need solar energy for the process.

All microorganisms of medical significance require energy obtained through exothermic reactions— chemosynthesis —and all require a source of carbon.

Organisms capable of using CO 2 are considered autotrophs. Many pathogenic organisms are able to utilize complex organic compounds; however, almost all can survive on simple organic compounds such as glucose. At which wavelength does maximum Photosynthesis take place.

In the Fertile Crescent today, the ruins of hundreds of early cities are in their self-made deserts, usually buried under the silt of the erosion of exposed forest soils.

Chemosynthesis is the process by which certain microbes create energy by mediating chemical reactions. So the animals that live around hydrothermal vents make their living from the chemicals coming out of the seafloor in the vent fluids!

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At which wavelength does maximum Photosynthesis take place

already exists. Would you like to merge this question into it? MERGE CANCEL. already exists as an alternate of this question. Would you like to make it the primary and merge this question into it? The Plantae kingdom is a kingdom of multicellular organisms, ofwhich the vast majority are all.

Where and by what organisms does chemosynthesis occur
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