mostly from food.
Animals obtain nitrogen by eating plants which have absorbed nitrogen from the soil.
Animals obtain the nitrogen they need to build proteins by consuming other organisms that contain nitrogen-rich compounds like proteins. The nitrogen in these compounds is eventually broken down and incorporated into the animal's own proteins through various metabolic processes. Additionally, some animals can also obtain nitrogen through the absorption of nitrogen-containing molecules from their environment.
Animals obtain nitrogen primarily through their diet by consuming plants and other animals that contain nitrogen-based compounds. Plants absorb nitrogen from the soil in the form of nitrates and ammonium, which they incorporate into proteins and nucleic acids. When animals eat these plants or other animals, they break down the proteins and nucleic acids to access the nitrogen, which is then used to synthesize their own molecules. Additionally, some animals can also obtain nitrogen from symbiotic relationships with certain bacteria that fix atmospheric nitrogen.
Most organisms obtain nitrogen in the form of nitrate (NO3-) or ammonium (NH4+). These forms of nitrogen are usually present in the soil and can be taken up by plants. Animals then obtain nitrogen by consuming plants or other animals.
Nitrogen
We get the nitrogen our bodies need by eating food.
Plants and animals die and decomposers break down their nitrogen containing molecules to ammonia. All animals get the nitrogen they need by eating plants, by eating other animals that ate plants, or by eating animals that ate animals that ate plants.
Plants get the nitrogen they need to make proteins and DNA by absorbing it from the soil through their roots in the form of nitrates or ammonium. Animals, including humans, obtain nitrogen by consuming plants or other animals that have already assimilated nitrogen into their bodies. This nitrogen is then used to synthesize proteins and nucleic acids in our cells.
Animals obtain the nitrogen needed to make proteins and nucleic acids by consuming foods that contain nitrogen, such as plants or other animals. The nitrogen is then broken down and used by the body to build the necessary molecules for growth and repair.
Animals obtain nitrogen primarily through the consumption of plants or other animals that contain nitrogen-containing compounds, such as proteins. They break down these compounds during digestion and reuse the nitrogen to build their own proteins and other essential molecules.
Nitrogen gas is fairly inert and so is difficult for organisms to process. Instead, animals must get usable nitrogen compounds from their food.
Bacteria in soil obtain their nitrogen primarily from organic matter, such as dead plants and animals. They can also obtain nitrogen through nitrogen fixation, a process where certain bacteria convert atmospheric nitrogen into a form that plants can use.