Chemical analysis of an unidentified compound isolated from cells showed the presence of carbon, hydrogen, oxygen, nitrogen, and sulfur.This unknown compound is most likely a

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Proteins are complex molecules composed of carbon, hydrogen, oxygen, nitrogen, and sulfur. Carbohydrates contain only carbon, hydrogen, and oxygen. Lipids usually contain only carbon, hydrogen, and oxygen but rarely sulfur or nitrogen. Nucleic acids contain carbon, hydrogen, oxygen, nitrogen, and phosphorus, but not sulfur.

Chemical Analysis of an Unidentified Compound Isolated from Cells Showed