AP BIOLOGY

Detailed explanation-1: -In addition to carbon, hydrogen, and oxygen atoms, all proteins contain nitrogen and sulfur atoms, and many also contain phosphorus atoms and traces of other elements. Proteins serve a variety of roles in living organisms and are often classified by these biological roles.

Detailed explanation-2: -Proteins differ from carbohydrates and lipids in that, they always contain nitrogen, carbon, hydrogen and oxygen.

Detailed explanation-3: -Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON). Nucleic acids such as DNA and RNA contain carbon, hydrogen, oxygen, nitrogen, and phosphorus (CHON P).

Detailed explanation-4: -Proteins contain carbon, hydrogen, oxygen, nitrogen, and sulfur. Protein molecules consist of one or more chains of small molecules called amino acids. The sequence of amino acids in chains and the number of chains in a protein determine the protein’s shape.

Detailed explanation-5: -The Correct Answer is Nitrogen. Proteins are made up of molecules called amino acids and are found in all living organisms. Each amino acid contains four elements: hydrogen, oxygen, nitrogen, and carbon, as well as sulphur in some cases.