cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell communication cellular response to stimulus system process response to external stimulus detection of stimulus response to abiotic stimulus nitrogen compound metabolic process biosynthetic process cellular metabolic process primary metabolic process small molecule metabolic process regulation of molecular function organic substance metabolic process cell commucell communication cellular rcellular response to stimulus system prosystem process response tresponse to external stimulus detection detection of stimulus response tresponse to abiotic stimulus nitrogen cnitrogen compound metabolic process biosynthetbiosynthetic process cellular mcellular metabolic process primary meprimary metabolic process small molesmall molecule metabolic process regulationregulation of molecular function organic suorganic substance metabolic process ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion binding enzyme regulator activity ion bindingion binding enzyme regulator activityenzyme regulator activity cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cell membrane organelle cellcell membranemembrane organelleorganelle