Macronutrients 95% or more of cell dry weight is made up of a few major elements: carbon, oxygen, hydrogen, nitrogen, sulfur, phosphorus, potassium, calcium, magnesium and iron. The first six(C, H, o,N, Pand s)are components of carbonhadrates, lipids, proteins and nucleic acidsMacronutrients • 95% or more of cell dry weight is made up of a few major elements: carbon, oxygen, hydrogen, nitrogen, sulfur, phosphorus, potassium, calcium, magnesium and iron. • The first six ( C, H, O, N, P and S) are components of carbonhadrates, lipids, proteins and nucleic acids