Sucrose is cleaved in your saliva by the enzyme sucrase to release glucose and fructose. use the structural formula of sucrose to describe fructose using the terms that define its carbon number and placement of the carbonyl group.

Sucrose is a disaccharide made of one glucose molecule and one fructose molecule. Glucose is a pyranose or a 6-carbon monosaccharide while fructose is a furanose of a 5-carbon monosaccharide. Sucrose is formed with an alpha 1,2 glycosidic bond meaning that the bond is shared with the 1st carbon of glucose and the second carbon of fructose. Attached is a picture of the organic chemical structure of sucrose.