The Nitrogen Cycle: A Large, Fast, and Mystifying Cycle - PMC

Understanding the Nitrogen Cycle nitrogen cycle Nitrogen cycle Atmospheric nitrogen cannot be used directly by plants and animals Nitrogen krebs cycle Nitrogen cycle Organic nitrogen compounds Nitrogen-containing compounds are important in plants Examples are proteins , nucleotides

cell cycle When an organism excretes waste or dies, the nitrogen in its tissues is in the form of organic nitrogen Various fungi and prokaryotes