Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?
Correct answer: A. Nitrogen
- A. Nitrogen
- B. Oxygen
- C. Carbon
- D. None of these
Explanation
Nitrogen is a structural component of amino acids in proteins and nitrogenous bases in nucleic acids. Oxygen, carbon and hydrogen are also important to life, but this combination of functions most specifically points to nitrogen.
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