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Fixation in Biological Definition

C4 carbon fixation

... For other meanings of C4 , see C4 (disambiguation) C 4 carbon fixation is a common metabolic pathway found in land plants ( C4 plants ). They ... limitation. The C 4 cycle allows for a spacial separation of carbon fixation from respiration, thus allowing C 4 plants to increase concentration of ...

Metabolism

... reaction (dark reaction) Calvin cycle Carbon fixation Drug metabolism Drug metabolism pathways, the ... , important for excretion of nitrogen as urea. Biological nitrogen fixation Nitrogen assimilation Nitrification Denitrification ...

Bacterium

... Some bacteria are able to use molecular nitrogen as their source of nitrogen, converting it to nitrogenous compounds, a process known as nitrogen fixation . Many other bacteria are found as symbionts in humans and other organisms. For example, their presence in the large intestine can help prevent ...

Calvin cycle

... energy carriers to convert carbon dioxide into organic compounds that can be used by the organism. This set of reactions is also called carbon fixation . The key enzyme of the cycle is called RubisCO . The total sum of reactions in the Calvin cycle is the following: 6 CO 2 + 12 NADPH + 12 H ...

Crassulacean acid metabolism

... Crassulacean acid metabolism ( CAM ) is a carbon fixation pathway in some photosynthetic plants . CAM is usually found in plants living under arid conditions, including those found in the desert (for ...

Crassulacean acid metabolism

... Crassulacean acid metabolism ( CAM ) is a carbon fixation pathway in some photosynthetic plants . CAM is usually found in plants living under arid conditions, including those found in the desert (for ...

Carbon fixation

... Carbon fixation is a process found in photosynthesis in autotrophic plants . It is when the three carbon dioxide molecules taken in each time there is a turn ...

Escherichia coli

... in Canadian Pulp and Paper Mill Water Systems - a Cause for Concern? - by Dr. F. Archibald (abstract only) Coliform Bacteria and Nitrogen fixation in Pulp and Paper Mill Effluent Treatment Systems - by Dr. F. Archibald (full text) Investigation of a UK outbreak by Brian Deer ...

Bacterium

... Some bacteria are able to use molecular nitrogen as their source of nitrogen, converting it to nitrogenous compounds, a process known as nitrogen fixation . Many other bacteria are found as symbionts in humans and other organisms. For example, their presence in the large intestine can help prevent ...

Evolutionary developmental biology

... where does it come from? Novelty may arise through several methods including gene duplication and gene regulation. Gene duplication allows fixation of a particular cellular or biochemical function at one locus , leaving the duplicated locus free to fulfill a new function. In contrast, ...

Genetic drift

... alleles usually have a finite lifetime. As the frequency of an allele drifts up and down over successive generations, eventually it drifts till fixation - that is, it either reaches a frequency of zero, and disappears from the population, or it reaches a frequency of 1 and becomes the only allele in ...

Plant

... They are not related to any of the photosynthetic groups, but are close relatives of animals . Importance The photosynthesis and carbon fixation conducted by land plants and algae are the ultimate source of energy and organic material in nearly all habitats. These processes also radically ...

Plant

... They are not related to any of the photosynthetic groups, but are close relatives of animals . Importance The photosynthesis and carbon fixation conducted by land plants and algae are the ultimate source of energy and organic material in nearly all habitats. These processes also radically ...

Proton-motive force

... membranes of the chloroplast , where it is generated by the light reaction of photosynthesis and used to synthesize ATP for use in the fixation of CO 2 . In prokaryotes , it exists across the cellular membrane of the organism. ...

Stroma

... The fluid filled area of a chloroplast outside of the thylakoid membranes wherein the light-independent reactions ( Calvin Cycle and Carbon fixation ) of photosynthesis take place. ...
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