humans cannot take nitrogen directly from the atmosphere then how does the requirement of nitrogen is fulfilled
Answers
Answer:
Nitrogen is a major essential element for all organisms, and a constituent of proteins, nucleic acids and other indispensable organic compounds. Although highly abundant (about 78% by volume) in the air, its concentrations in soil, crust rocks and sea water are relatively low, and the availability of N is often a limiting factor for plant growth in natural habitats as well as agricultural crop production. Major forms of inorganic N in soil are nitrate and ammonium, which plants absorb from roots. In addition, some plants like leguminous plants can fix atmospheric N 2 symbiotically in association with nitrogen-fixing soil bacteria, rhizobia. Ammonium is a key component in the assimilation of nitrogen into organic compounds, whether the N is derived from ammonium absorption, nitrate reduction, or nitrogen fixation. The ammonium is incorporated initially into the amide group of glutamine by glutamine synthetase, then into glutamate by glutamate synthase, after which the N is assimilated into various amino acids, proteins and nucleic acids.
Answer:
The humans respiration from the atmosphere involves oxygen, nitrogen, and type of gases are included in the atmosphere. Humans can't utilise nitrogen through respiration but can absorb through the consumption of plants and animals that have consumed nitrogen rich vegetation. The air we breathe is around 78% nitrogen so,it is obvious that it enters our body with every breathe.