Answer:
The correct answer is nitrogen, carbon, oxygen and hydrogen.
Explanation:
The four major biological macromolecules are lipids, carbohydrates, nucleic acid, and proteins. These macromolecules are part of our our diet which we consume. Lipids and carbohydrates contain carbon, oxygen and hydrogen element. Nucleic acid and proteins contain carbon, nitrogen, oxygen, and hydrogen.
Therefore nitrogen, carbon, oxygen, and hydrogen are the elements that are commonly found as a part of biological macromolecules and 95% of our body weight is because of these 4 elements. The ratio of these elements is different in each macromolecules.
