Question

What are the forms of nitrogen present in living things?

Answer 1

it is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

Answer 2

there are various forms of nitrogen present in living things:

1. in the form of uric acid in excreta
2. nucleic acids  are made of nitrogen bases
3. Amino acids after the break down of protein
4. ammonia in plants