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Nitrogen gas composes 70% of the atmosphere but because it is so stable it remains a gas and unusable to plant. Bacteria have evolved that can break the N2 bond and provide nitrogen as a soluble product to the roots of plants. Once taken up by the plant the nitrogen moves through the food chain to animals etc.
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What is a peocess by which bacteria remove nitrogen from the air and make it avaliable to plants-?
Nitrogen fixation is the process by which bacteria remove nitrogen from the air and make it available to plants.
What does nitrogen fixation mean science?
Nitrogen fixation is the process by which nitrogen gas from the air is combined with some other element, such as hydrogen to make ammonia, or to make any other compound containing nitrogen.
Why is nitrogen fixation important to living things?
Plants need nitrogen in order to grow. Nitrogen is abundant in the earth's atmosphere, but plants cannot use it in that particular form (nitrogen gas). Certain bacteria which reside on some plant roots are able to change atmospheric nitrogen into a form that plants can use (ammonia).
What is the process by which bacteria remove nitrogen from the air and make it available for plants?
Bacteria performs nitrogen fixation, which involves converting the atmospheric nitrogen (N2) into usable organic nitrates (NO3-). Said bacteria are often referred to as nitrogen fixating bacteria. The process is sometimes called nitrification.Scientists have been able to give plants genes from bacteria to help them do a beeter job. This process is called recombinant DNA technology. Nitrogen fixing bacteria are in root nodules on legumes and maybe some other plant groups.Converts nitrogen in the air to nitrates.
How do living organisms obtain their nitrogen requirement?
All organisms need nitrogen to live and grow. Plants take up nitrate ions from the soil, they are then absorbed into roots by active transport, the plant then produces nitrogen-containing compounds such as protein. This nitrogen then gets into the food web as primary consumers feed on plants and obtain the nitrogen-containing compounds. However, the atmosphere is made up of 78% nitrogen and is unavailable in this form to organisms. This is due to the triple bond between the two N atoms causing it to be inert. To be used by organisms, it must be converted to a chemically available form, such as ammonium (NH4+), nitrate (NO3-), or urea ((NH3)2CO). There are five main processes that convert nitrogen to a more accessible form. They are; nitrogen fixation, nitrogen uptake, decay process, nitrification and denitrification. The first process I will talk about is nitrogen fixation. There, the nitrogen is converted to ammonium; it is the only way organisms can obtain nitrogen directly from the atmosphere. The only organism that can fix nitrogen through metabolic process is bacteria from the genus Rhizobium. The nitrogen fixers are usually found on host plants, but there are also nitrogen fixing bacteria found without host plants. They are known as free-living nitrogen fixers, e.g. in the aquatic environment a very important nitrogen fixer would be cyanobacteria. Nitrogen fixation can also be carried out in high-energy natural events, such as lightning and forest fires. The high-energy breaks the triple bond between the two nitrogen atoms producing a significant amount of single nitrogen atoms available for use. The next process is nitrogen uptake, this is where plants or bacteria itself makes use of the ammonia produced by the nitrogen fixing bacteria. The ammonium is converted from NH4+ to N to make protein or other nitrogen containing compounds. A very important process that returns nitrogen back to the nitrogen cycle for use is the decay process. When organisms, die, nitrogen is converted back into inorganic nitrogen by a process called nitrogen mineralization. Decomposers consume the organic matter and this leads to decomposition. Nitrogen contained within the dead organism in converted to ammonium, it is then available for use to plants, or transformed into NO3- (nitrification). Through the nitrogen cycle, food-making organisms obtain necessary nitrogen through nitrogen fixation and nitrification. Nitrogen compounds are returned to atmosphere and soil through decay and denitrification. In crops, few plants are left to decay back into soil, so the nitrogen cycle doesn't supply enough nitrogen to support plant growth. Therefore natural or artificial fertilizers containing NO3- or NH4+ compounds are added.
What is a peocess by which bacteria remove nitrogen from the air and make it avaliable to plants-?
Nitrogen fixation is the process by which bacteria remove nitrogen from the air and make it available to plants.
What is the process by which gaseous nitrogen is converted into ammonia a compound that organisms can use to make amino acids and other nitrogen-containig organic molecules?
Nitrogen fixation
What is fixation in the nitrogen cycle and how does it contribute to the overall process of nitrogen cycling in the environment?
Fixation in the nitrogen cycle is the process by which certain bacteria convert atmospheric nitrogen gas into a form that plants can use, such as ammonia or nitrate. This is important because plants need nitrogen to grow, and fixation helps make nitrogen available in the soil. Overall, fixation is a crucial step in the nitrogen cycle as it helps maintain a balance of nitrogen in the environment, supporting plant growth and ecosystem health.
What happens during the process of nitrogen fixation and how does it contribute to the overall nitrogen cycle"?
During nitrogen fixation, certain bacteria convert atmospheric nitrogen into a form that plants can use, like ammonia. This process helps make nitrogen available for plant growth, which then enters the food chain as animals consume plants. Overall, nitrogen fixation is essential for maintaining the balance of nitrogen in ecosystems and supporting plant growth.
What does nitrogen fixation mean science?
Nitrogen fixation is the process by which nitrogen gas from the air is combined with some other element, such as hydrogen to make ammonia, or to make any other compound containing nitrogen.
Which process describes nitrogen fixation?
Bacteria combines with hydrogen to make ammonia, which is changed and turned into compounds such as nitrate or nitrogeNitrogen fixation is the natural process, either biological or abiotic, by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3).
What converts gaseous nitrogen into ammonia in the nitrogen cycle?
Nitrogen-fixing bacteria, such as Rhizobium and Azotobacter, convert gaseous nitrogen into ammonia through a process called nitrogen fixation. This process helps make nitrogen available to plants for growth and is a key step in the nitrogen cycle.
Describe why nitrogen must cycle through an ecosystem?
Nitrogen must be cycled through an ecosystem so that the nitrogen is available for organisms to make proteins.
How is nitrogen fixation carried out?
Nitrogen fixation is the process by which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes (such as, notably, ammonia, nitrate and nitrogen dioxide).
Why is nitrogen fixation important to living things?
Plants need nitrogen in order to grow. Nitrogen is abundant in the earth's atmosphere, but plants cannot use it in that particular form (nitrogen gas). Certain bacteria which reside on some plant roots are able to change atmospheric nitrogen into a form that plants can use (ammonia).
Why must nitrogen cycle through an ecosystem?
Nitrogen is essential for the growth and survival of living organisms, as it is a key component of proteins and DNA. The nitrogen cycle facilitates the conversion of nitrogen between different forms that can be utilized by organisms in the ecosystem. This cycling process ensures that nitrogen is continuously available for plants and other organisms to support their growth and metabolism.
How do organisms use nitrogen?
it depends on which living organisms you are talking about. Plants absorb it through their roots in the form of nitrate (NO3) or ammonia (NH4) or in the case of Nitrogen-fixing plants, they host a bacterial infection which undergoes di-nitrogen fixation within a nodule and makes the nitrogen for the plant. Many types of bacteria and other microorganisms possess the ability to fix atmospheric N2, which eukaryotes in general cannot do. Animals in general get their nitrogen by consuming other organisms or organic material.
