Answer:
Free nitrogen is important for the living organism becuse nitrogen helps to build the structure of various biomolecules such as amino acids,proteins and nucleic acids such as DNA and RNA.
Explanation:
Importance of free nitrogen in case of animals
Nitrogen is an important constituent of porphyrin ring present in the hemoglobin protein protein which play a significant role in the transport of oxygen and carbon dioxide gas.
Nitrogen is also important in cell growth,repair and tissue development.We cannot intake the atmospheric nitrogen.Nitrogen is acquired by us through the consumption of protein rich diet.
Importance of free nitrogen in case of plants
Nitrogen is an important component of the chlorophyll pigment present in the leaves which helps in photosynthesis a process that deals with the formation of glucose by the utilization of sunlight.
Some parts of the energy rich compound Adenosine triphosphate is made up of Nitrogen.
