Gwandle doesn't want me to do biology.
What's the chemical formula of fructose? It's C6H12O6, the same as glucose! If these two molecules have the same chemical formula, how can they be different molecules? Well, they have the same chemical formula, but they have different structural formulas. The ring and chain structural formulas of both glucose and fructose are shown in the figure below. These different structural formulas are the reasons behind the taste difference and other chemical differences between glucose and fructose.
Glucose and fructose belong to a class of compounds known as monosaccharides (mahn uh sak' uh rides), which are also called simple sugars.
Monosaccharides – Simple carbohydrates that contain 3 to 10 carbon atoms
The reason that these are called monosaccharides is that they form the basic building blocks of more complex carbohydrates called disaccharides (dye sak' uh rides) and polysaccharides (pahl ee sak' uh rides).
Polysaccharides – Carbohydrates that are made up of more than two monosaccharides
These more complex carbohydrates form the basis of much of the food that we eat.
3 years ago