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Carbohydrates. The carbohydrates are the compounds which provide energy to living cells. They are compounds of carbon, hydrogen and oxygen with a ratio of two hydrogens for every oxygen atom. The carbohydrates we use as foods have their origin in the photosynthesis of plants.They take the form of sugars, starches, and cellulose.oth starches and cellulose are carbohydrates which are classified as polysaccharides since they are composed of chains of glucose molecules. While they are similar, starches can be used as energy sources by the human body while cellulose cannot.
The main purpose of the carbohydrate is to provide fuel for your body to function. Carbohydrates are types of sugars. They perform several functions. The most important func â¦ tion is as the primary source of energy for the body. But there are many types of carbohydrates that perform a myriad of functions in the body. Answer   Your body gets carbohydrates from the foods we eat. Excellent sources of carbohydrates include bread, cereal, rice, grains, potatoes and other fruits and â¦ vegetables. Your body can get carbohydrates from other foods as well but they may be mixed with the other two large nutrients -- fat and protein.