Question

which of the four major biological macromolecules can be easily identified by the nitrogen base and phosphate found in its structure? nucleic acid carbohydrate lipid protein

Explanation:

Nucleic acids (DNA and RNA) have a structure that includes nitrogen - containing bases (adenine, thymine, cytosine, guanine, uracil) and phosphate groups in their nucleotides. Carbohydrates are mainly composed of carbon, hydrogen, and oxygen. Lipids are made up of fatty acids and glycerol. Proteins are composed of amino acids. Nitrogen bases and phosphates are characteristic of nucleic acids.

Answer:

A. nucleic acid