Biological Nitrogen Fixation and Assimilation

The video explains nitrogen fixation, a process carried out by prokaryotes or bacteria known as nitrogen fixers. These organisms use the enzyme nitrogenase to convert atmospheric nitrogen into ammonia. Nitrogen fixation can be free-living, symbiotic, or associative. The video details the symbiotic relationship between plants and bacteria, such as Rhizobium, which form root nodules. The chemical process involves several steps, including the formation of diamide and hydrazine, leading to ammonia production. Ammonia is then used in amino acid biosynthesis through reductive amination and transamination.

Explain the process of root nodule formation in leguminous plants.

What are the two major reactions for amino acid biosynthesis in plants?

How does transamination contribute to amino acid biosynthesis?