Which element is present in proteins but not in carbohydrates?

Proteins normally do not contain which element?

Which of the following elements is NOT present in carbohydrates? *1 puntohydrogennitrogencarbonoxygen

Proteins are chemically different from carbohydrates and fats because they also contain:a.Nitrogen.b.Phosphorus.c.Sodium.d.Iron.

Which of the following biomolecules contain only the elements carbon, hydrogen, and oxygen*1 pointcarbohydrates and lipidsA and Bnucleic acids and carbohydrateslipids and proteins

Which of the following is NOT a chemical substance found in cells?ProteinsCarbohydratesFats or lipidsEnzymes