Final answer:
The elements that differentiate the amino acids of a protein from the sugars of a carbohydrate are Nitrogen and Side Chain Variability.
Step-by-step explanation:
The elements that differentiate the amino acids of a protein from the sugars of a carbohydrate are Nitrogen and Side Chain Variability. All amino acids contain both an acid (the carboxyl group) and a base (the amino group). The variable side chain, which can vary in size and polarity, gives each amino acid its unique characteristics.