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Nitrogen fixation is believed to take place within which Nostoc cell?
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∙ 14y ago
Heterocysts
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∙ 14y ago
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Why do pulse plants have nodules in them?
Pulse plants have nodules to help them convert nitrogen in the atmosphere to ammonia that can be used by the pulse plants to manufacture amino acids, proteins, nucleic acids, and other nitrogen-containing compounds that are necessary for the pulse plants to survive.The conversion of atmospheric nitrogen into ammonia is called nitrogen fixation. The nitrogen fixation process starts with the formation of nodules.Rhizobium is a common soil bacterium which invades the roots of the pulse plant and multiplies within the cells of the cortex layer. Within a week after infection small nodules are visible to the naked eye.The nodules grow and turn pink or reddish in color indicating that the process of nitrogen fixation has started.
The main purpose of DNA is to store information. Where is information stored within a DNA molecule?
It is stored within the sequence of nitrogen bases.
Which parts of the human body that contain nitrogen?
Most of the nitrogen in your body is contained within proteins and most of the protein in your body is contained within the muscles.
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 de nitification?
The purpose of denitrification is to remove or reduce nitrogen or nitrogen groups within a substance or mixture. One example of denitrification would be to add bacteria to soil.
What organisms perform nitrogen fixation?
There is a bacterium that resides within the rhizomes - nodules found within the roots - of Legumes that transforms atmospheric N2 [gaseous molecular Nitrogen] into its forms [NO2 and NO3] that are biochemically active.
Which parts of the natural environment carry out nitrogen fixation?
Legumes; possess nodules located within their roots that are packed with Nitrogen-Fixing bacteria. So the Answer is: leguminous [root-bound] nodules.
Why do pulse plants have nodules in them?
Pulse plants have nodules to help them convert nitrogen in the atmosphere to ammonia that can be used by the pulse plants to manufacture amino acids, proteins, nucleic acids, and other nitrogen-containing compounds that are necessary for the pulse plants to survive.The conversion of atmospheric nitrogen into ammonia is called nitrogen fixation. The nitrogen fixation process starts with the formation of nodules.Rhizobium is a common soil bacterium which invades the roots of the pulse plant and multiplies within the cells of the cortex layer. Within a week after infection small nodules are visible to the naked eye.The nodules grow and turn pink or reddish in color indicating that the process of nitrogen fixation has started.
How do living organism live?
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.
The main purpose of DNA is to store information. Where is information stored within a DNA molecule?
It is stored within the sequence of nitrogen bases.
Which parts of the human body that contain nitrogen?
Most of the nitrogen in your body is contained within proteins and most of the protein in your body is contained within the muscles.
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.
The primary gas found within air is?
It is nitrogen.
What bond exists within two nitrogen?
In a nitrogen molecule there are three covalent bonds (called a triple bond).
Why is a nitrogen label a good tool for studying DNA?
DNA contains nitrogenous bases, thus it contains the nitrogen. This shows that a nitrogen label would be helpful in tagging the nitrogen within the DNA.
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.
Within an ecosystem the largest amount of nitrogen is always found where?
The atmosphere.
