Do I need the learn the nitrogen cycle (Biology OCR A2)Watch
So do I need to know it?
This is what the specification says about it: describe how microorganisms recyclenitrogen within ecosystems. (OnlyNitrosomonas, Nitrobacter and Rhizobiumneed to be identified by name).
We don't need to know the actual cycle just the stages within it. The diagram in the book is overcomplicated (as is most of the book) and contains a lot of unnecessary information. I recommend you get a revision guide (if you don't already own one)! I recall there was a long answer question on the Nitrogen cycle a few years back so we definitely do need to know it. Good luck