All organisms require nitrogen to make amino acids, which in turn are used to build what?

Amino acids are used in the production of proteins!

importance of amino acids :
1 amino acids are used for the production of protein as they are building blocks of proteins ..
2 these proteins make hairs ,nails muscles tissues ..
3 it has important role in a balance diet ..
4 these are the second largest component that are present in human body
5 these are involve in the formation of hormones and enzymes ..