What is a single sugar? The essential guide to monosaccharides
                                
                                
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                                    5 min read                                
                            
                                Monosaccharides are the basic building blocks of all carbohydrates. So, what is a single sugar? Known scientifically as a monosaccharide, this fundamental unit is the simplest form of sugar and cannot be broken down further. It is a crystalline solid that is water-soluble and can serve as an immediate source of energy for the body.