Choose the INCORRECT statement.
◦ Glucose, galactose and mannose exist in straight-chain and in ring structures.
◦ Two monosaccharides combine by losing a water molecule to form a disaccharide.
◦ The important natural disaccharides are maltose, cellobiose, lactose and sucrose.
◦ Glycogen is the reserve carbohydrate of animals.
◦ Glycogen cannot be broken down by human digestion.