Question

which elements are common to all organisms? check all that apply. sodium oxygen sulfur hydrogen iron phosphorus

Explanation:

All organisms are made of biomolecules (like carbohydrates, proteins, nucleic acids, lipids) which contain oxygen (in $H_2O$, organic compounds), hydrogen (in $H_2O$, hydrocarbons), sulfur (in some proteins like cysteine), and phosphorus (in nucleic acids, phospholipids). Sodium and iron are not universal to all organisms (e.g., some microbes may not rely on sodium, and not all organisms need iron in the same essential way as the others listed).

Answer:

B. oxygen, C. sulfur, D. hydrogen, F. phosphorus