Table of Contents
How do glucose and galactose differ?
Galactose is a monosaccharide and has the same chemical formula as glucose, i.e., C6H12O6. It is similar to glucose in its structure, differing only in the position of one hydroxyl group. This difference, however, gives galactose different chemical and biochemical properties to glucose.
What is galactose and glucose?
Galactose is a monosaccharide. When combined with glucose (monosaccharide), through a condensation reaction, the result is the disaccharide lactose. The hydrolysis of lactose to glucose and galactose is catalyzed by the enzymes lactase and β-galactosidase.
Are glucose and galactose Epimers?
The sugars glucose and galactose are epimers. In glucose, the -OH group on the first carbon is in the axial position, the direction opposite the -OH group on carbon C-4. In galactose, the -OH group is oriented in the same direction, the equatorial position.
Is galactose sweeter than glucose?
Fructose is sweeter than glucose due to its stereomerism structure. Fructose absoprtion occurs via the GLUT-5  (fructose only) transporter, and the GLUT2 transporter, for which it competes with glucose and galactose.