Nitrogen fixation is a chemical process by which molecular dinitrogen (N 2) is converted into ammonia (NH 3). [1] It occurs both biologically and abiologically in chemical industries. Biological nitrogen fixation or diazotrophy is catalyzed by enzymes called nitrogenases. [2]

Dec 31, 2024 · Nitrogen fixation, any natural or industrial process that causes free nitrogen, which is a relatively inert gas plentiful in air, to combine chemically with other elements to form more-reactive nitrogen compounds such as ammonia, nitrates, or nitrites.

Aug 15, 2023 · Nitrogen fixation involves a set of natural and artificial processes that convert nitrogen into a form organisms can use. Nitrogen is an essential component of amino acids, proteins, and DNA, making it fundamental for life.

Jan 27, 2025 · Nitrogen-fixing bacteria are prokaryotic microorganisms that are capable of transforming nitrogen gas from the atmosphere into “fixed nitrogen” compounds, such as ammonia, that are usable by plants.

Feb 17, 2023 · It is a process where atmospheric nitrogen is fixed by soil-living heterotrophic bacteria that fix nitrogen independently without associating with any other organism. Here, the microorganisms derive energy from the decomposition of …

Nitrogen is the most important, limiting element for plant production. Biological nitrogen fixation is the only natural means to convert this essential element to a usable form.

May 27, 2024 · Nitrogen fixation is the conversion of free nitrogen (molecular and elemental) into nitrogenous compounds (to make it available for absorption by plants). The fixation of nitrogen is accomplished through physicochemical and biological processes.

Jan 10, 2025 · Nitrogen fixation is the process where nitrogen gas is converted into ammonia. This conversion allows plants to absorb and utilize nitrogen. It is essential for plant growth and soil health.

Jan 25, 2025 · Explore Symbiotic and Free-Living Nitrogen-Fixing Organisms. Goal: Compare nitrogen fixation strategies in symbiotic systems (e.g., Rhizobium–legume interactions) versus free-living diazotrophs (e.g., Azotobacter), noting the biochemical underpinnings of each.

Feb 15, 2018 · Nitrogen fixation is a key part of the nitrogen cycle. Here is a look at what fixed nitrogen is and an explanation of different fixation processes.