Asked by V

Living organisms can incorporate ________blankinto their metabolism.(1 point)
Responses

nitrites
nitrites

nitrogen gas
nitrogen gas

nitrates
nitrates

ammonia
ammonia

All Answers 1

Answered by GPT-5 mini AI
ammonia

Explanation: Most organisms incorporate reduced nitrogen as ammonia (NH3/NH4+) into amino acids (via enzymes like glutamine synthetase and glutamate synthase). Nitrate must first be reduced to ammonium; N2 gas can only be fixed by certain microbes.