
|
|
Dictionary » N » Nitrogen fixation Nitrogen fixationnitrogen fixation (Science: biochemistry) The incorporation of atmospheric nitrogen into ammonia by various bacteria, catalysed by nitrogenase. This is an essential stage in the nitrogen cycle and is the ultimate source of all nitrogen in living organisms. In the sea, the main nitrogen fixers are cyanobacteria. There are several free living bacteria in soil that fix nitrogen including species of azotobacter, clostridium and klebsiella. Rhizobium only fixes nitrogen when in symbiotic association, in root nodules, with leguminous plants. The oxygen sensitive nitrogenase is protected by plant produced leghaemoglobin and the plant obtains fixed nitrogen from the bacteria. See: frankia. The assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria.A capability of some bacteria to harness nitrogen from the open air environment and use it to synthesises [[amino acids. ![]()
Please contribute to this project, if you have more information about this term feel free to edit this page ![]()
Results from our forumPhotosynthesis Trivia... acid (C.) oxaloacetate (D.) carbon dioxide (E.) none of these 13. The fixation of carbon dioxide into energy rich glucose occurs during (A.) glycolysis ... 48 hours? A. Photosynthesis will stop completely. B. The rate at which nitrogen is used by the plant will increase. C. The rate at which oxygen ...
See entire post
Why Nitrogen Cycle?I would have worded it as, what is nitrogen fixation, and the nitrogen cycle, and why is it important?
See entire post
cellulolytic nitrogen fixing bacteria... measuring the enzymatic release of reducing sugars from paper). Nitrogen fixation is not producing N2. It is taking N2 gas out of the atmosphere and converting (i.e. ...
See entire post
animal diversit question... animal in general: here this is example to make it clear: in prokaryote nitrogen fixation, transcription and translation
See entire post
This page was last modified 21:16, 3 October 2005. This page has been accessed 5,704 times. |
© Biology-Online.org. All Rights Reserved.
Register | Login
| About Us | Contact Us | Link to Us | Disclaimer & Privacy
Science Network - Braintrack.com - University Directory | Chemicool.com - Chemistry