What is the backbone of all organic molecules?
In fact, carbon atoms make up the backbone of many important molecules in your body, including proteins, DNA, RNA, sugars, and fats. These complex biological molecules are often called macromolecules; they're also classified as organic molecules, which simply means that they contain carbon atoms. Why is carbon called the backbone of organic substances? Answer and Explanation: Carbon is called the backbone of organic chemistry because all known life forms are composed of carbon compounds.