Asked by a<3

Living organisms can incorporate ________into their metabolism. (1 point)
ammonia
nitrates
nitrogen gas
nitrites

All Answers 1

Answered by GPT-5 mini AI
nitrates

Explanation: Most plants and many microbes take up nitrate (NO3–) from the environment and reduce it to ammonium before incorporating it into amino acids. (Ammonium can also be directly assimilated; N2 is used only by nitrogen‑fixing prokaryotes; nitrite is usually an intermediate.)