Is an essential building block of amino and nucleic acids and proteins and is essential to all living organisms. Protein rich vegetables like legumes are rich food sources of nitrogen.
An element with the atomic symbol N, atomic number 7, and atomic weight 14. Nitrogen exists as a diatomic gas and makes up about 78% of the earth’s atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
A chemical element, which is a gas that is the main component of air and is an essential part of protein.
An essential element that is a component of amino acids.
Non-metallic element that is a component of all protein and many organic compounds. Nitrogen compounds are essential parts of all organisms, present in nucleic acids, proteins, and other biologically important compounds.
A colorless, gaseous element found in the air. Nitrogen forms about four fifths of the Earth’s atmosphere. Nitrogen is a constituent of protein and nucleic acids and is therefore present in all living cells. Nitrogen is responsible for a serious condition (the bends, compressed air illness, or decompression sickness).
A gaseous element and a major constituent of air (79 per cent). Nitrogen is an essential constituent of proteins and nucleic acids and is obtained by man in the form of protein-containing foods (atmospheric nitrogen cannot be utilized directly). Nitrogenous waste is excreted as urea.
A colorless, odorless, tasteless, gaseous element occurring free in the atmosphere, forming approx. 80% of its volume. Its atomic number is 7 and its atomic weight is 14.0067.
A clear, scentless gas constituting 78 percent of Earth’s atmosphere is known as nitrogen. This atmospheric nitrogen lacks biological activity.
Nitrogen gas cannot be utilized by the body, but compounds of nitrogen are essential to life. The most important of such compounds are amino acids, the building blocks of proteins, which represent the fundamental structural substances of all cells and tissues. Humans cannot make certain amino acids (called essential amino acids), which must be obtained from the diet in the form of animal and plant proteins. The proteins are then broken down by digestion into their constituent amino acids to be absorbed and reconstituted into the specific proteins needed by the body. These processes of protein breakdown and reconstitution produce a variety of nitrogen-containing waste products, primarily urea, which are excreted by the body in the urine.