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  2. Nitrogen fixation - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_fixation

    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]

  3. Nitrogen cycle - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_cycle

    The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation ...

  4. 8-Hydroxyquinoline - Wikipedia

    en.wikipedia.org/wiki/8-Hydroxyquinoline

    8-Hydroxyquinoline. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 8-Hydroxyquinoline (also known as oxine) is an organic compound derived from the heterocycle quinoline. A colorless solid, its conjugate base is a chelating agent, which is used for the quantitative determination ...

  5. Nitrogen - Wikipedia

    en.wikipedia.org/wiki/Nitrogen

    Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element bond to form N 2, a colorless and odorless diatomic gas.

  6. C4 carbon fixation - Wikipedia

    en.wikipedia.org/wiki/C4_carbon_fixation

    C4 carbon fixation or the Hatch–Slack pathway is one of three known photosynthetic processes of carbon fixation in plants. It owes the names to the 1960s discovery by Marshall Davidson Hatch and Charles Roger Slack. [ 1] C 4 fixation is an addition to the ancestral and more common C 3 carbon fixation. The main carboxylating enzyme in C 3 ...

  7. Here Are the 2 Ages in Life When ‘Dramatic Changes’ in the ...

    www.aol.com/2-ages-life-dramatic-changes...

    Rather than aging being a gradual process, the human body actually experiences two dramatic bursts of aging at a molecular level, according to a new study.

  8. Aquarium of the Pacific Shows Animal Reactions to Recent ...

    www.aol.com/aquarium-pacific-shows-animal...

    If it swims in the ocean, the aquarium probably has one! In mid-August, Southern California experienced a 4.4-magnitude earthquake that rocked Los Angeles and surrounding areas. A fan asked the ...

  9. 8-Oxo-2'-deoxyguanosine - Wikipedia

    en.wikipedia.org/wiki/8-oxo-2'-deoxyguanosine

    For example, 8-oxo-dG was increased 10-fold in the livers of mice subjected to ionizing radiation, but the excess 8-oxo-dG was rapidly removed with a half-life of 11 minutes. [4] As reviewed by Valavanidis et al. [5] increased levels of 8-oxo-dG in a tissue can serve as a biomarker of oxidative stress.

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