all the biological macromolecules contain carbon, hydrogen and oxygen. however, most do not contain…

all the biological macromolecules contain carbon, hydrogen and oxygen. however, most do not contain nitrogen. the category that contains nitrogen are\na lipids.\nb proteins.\nc carbohydrates.\nd unsaturated fats.

all the biological macromolecules contain carbon, hydrogen and oxygen. however, most do not contain nitrogen. the category that contains nitrogen are\na lipids.\nb proteins.\nc carbohydrates.\nd unsaturated fats.

Answer

Brief Explanations:

Biological macromolecules like lipids, carbohydrates and unsaturated fats mainly consist of carbon, hydrogen and oxygen. Proteins are composed of amino - acids which contain nitrogen in their amino group.

Answer:

B. proteins