No, they use amino acids from food. Only some special plants (in combination with bacteria) can do this job using elemental N2
Yes, organs, like all living cells, use nitrogen to make proteins. Nitrogen is an essential component of amino acids, the building blocks of proteins. The body obtains nitrogen through dietary intake of protein-rich foods. Once inside the body, nitrogen is incorporated into amino acids, which are then used to synthesize proteins in various organs and tissues.
nitrogen-fixing bacteria
Nitrogen is the most abundant element in the Earth's atmosphere. Bacteria in the soil 'fix' the nitrogen gas into compounds which can be taken in by plants; the plants get eaten by animals & they use the nitrogen to make proteins.
Proteins and nucleic acids contain nitrogen.Proteins use nitrogen as part of amino group, which is NH2.Nucleic acids use nitrogen for nitrogen bases such as adenine, guanine, cytosine, and thymine.
Proteins are organic compounds, mostly composed of hydrogen, oxygen, nitrogen and carbon with some trace elements. The first three are obtained from water and the air, while the nitrogen and trace elements are acquired primarily via the roots from minerals (or fertilizer) in the soil.
Plants cannot make protein from pure carbohydrate, because proteins contain nitrogen and sometimes sulphur. They get the nitrogen which they need from the nitrates in the soil.the bacteria called `Rhizobium `lives in the roots of legminous plants and leg. plants need nitrogen to grow pulses.The bacteria called `rhizobium` changes the atmospheric nitrogen in solution form and in return the plants give the bacteria shelter and food thus this is called a symbiotic relationship .
To make proteins
Nitrogen
make proteins.
By eating proteins as proteins have nitrogen in it
Nitrogen is consumed by different organisms in different ways. Legumes (a type of plant) are able to take nitrogen straight out of the atmosphere (which is roughly 78% nitrogen gas). Animals aren't able to do this so they must obtain their nitrogen by eating substances such as vegetables and meat. We break down proteins (largely from meat) down to their constituents which are amino acids. This is how we obtain our source of nitrogen (amino acids contain nitrogen atoms). We then use these amino acids to build proteins that we need in our body such as tissue, enzymes, antibodies and more.
Humans use nitrogen in the form of proteins. Bacteria found in soil convert atmospheric nitrogen into nitrates that plants use to produce proteins.
"plants"
Many compounds in plants include Nitrogen including Proteins and DNA. Note, most plants can not use atmospheric Nitrogen (N2), and must absorb nitrogen that is bonded to hydrogen or carbon such as Ammonia (NH3).
Nitrogen is used in the males reproductive organs, the sperm to be presise.
nitrogen-fixing bacteria
Your body needs nitrogen to make proteins in your muscles, skin, blood, hair, nails and DNA.See the related link for more information.
At www.fernlea.com, it says "This nutrient is responsible for the healthy green color of your plants. It is an essential part of proteins and chlorophyll, the plant pigment that plays a vital role in photosynthesis. Nitrogen deficiencies result in a yellowing of leaves, and a general slow down in growth."