Glucose and fructose are both monosaccharides, meaning they are simple sugars that cannot be broken down into smaller sugar units.

Therefore, they are each only made up of one molecule, not two.

However, they both have the same chemical formula: C6H12O6, which means they have:

* 6 carbon atoms

* 12 hydrogen atoms

* 6 oxygen atoms

The difference between them lies in the arrangement of these atoms within the molecule, leading to different structural and chemical properties.