Carbohydrates

Carbohydrates have several roles in living organisms, including energy transportation, as well as being structural components of plants and arthropods.

Carbohydrates and nutrition

Bread, pasta, beans, potatoes, bran, rice, and cereals are carbohydrate-rich foods. Most carbohydrate-rich foods have high starch content. Carbohydrates are the most common source of energy for most organisms, including humans.