Nitrogens are useful to plants but are they also useful to us?how???
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Answer:
Human needs amino acids and for that nitrogen is an important source which further help to synthesize human proteins. A metabolic process in our body depends upon enzymes, which contains various kinds of proteins. The nucleic acid DNA makes up your genes and RNA is involved in protein synthesis which needs nitrogen for it. We all know that without DNA we would not be alive. For proper digestion of food and growth human body needs nitrogen. It is extremely important in the development of the human foetus.Cell replacement, tissue repair all requires nitrogen for the production of new cells. For making some other types of compounds that are not proteins, nitrogen is used like heme in haemoglobin which carries oxygen in red blood cells.
Therefore, we come to know that nitrogen plays a crucial role in our life. It helps in protein synthesis. Our body eliminates ammonia by converting it to urea, which kidneys excrete it in the form of urine. In this way nitrogen is returned back to the environment.