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In: Biology

All mammals have oxygen sensing system to directly monitor the oxygen availability and energy sensing system...

All mammals have oxygen sensing system to directly monitor the oxygen availability and energy sensing system which indirectly monitors the carbon source supply. Considering the important role of nitrogen element in biologic system, one can assume the existence of a nitrogen-sensing system as well. If you agree, discuss what this system might be. If you do not agree, write down your reasoning and argument. Either way you choose, please cite relevant reference to support your argument.

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