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Which of the following statements is true for all organisms?

  • A.they require organic nutrients
  • B.they require inorganic nutrients
  • C.they require growth factors
  • D.they require oxygen gas

Answer: B

Correct answer: they require inorganic nutrients

Every organism needs inorganic nutrients - water, and sources of nitrogen, phosphorus, sulfur, potassium and the trace metals. The other three are not universal: autotrophs need no organic carbon, many organisms make all their own growth factors, and anaerobes are poisoned by oxygen.

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