A carbohydrate is a biological molecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen:oxygen atom ratio of 2:1 (as in water) with the general formula Cn (H2O)n. Carbohydrates are technically hydrates of carbon. A major food source and a key form of energy for most organisms. Natural saccharides are generally built of simple carbohydrates called monosaccharides with general ...
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