Introduction to Carbohydrates

Carbohydrates are oxygen-rich biomolecules, which play a central role in metabolic reactions of energy transfer. They are an important class of biomolecule that provides energy to organisms, likewise, they are known as "sugars" or saccharides . 

The American Diabetes Association notes that carbohydrates are the body's main source of energy. They are called carbohydrates because, at the chemical level, they contain carbon, hydrogen and oxygen.