Answer:
disaccharide
Step-by-step explanation:
A disaccharide is a substance made up of two molecules of simple sugars (monosaccharides) linked to each other.
Monosaccharides include: glucose, fructose, galactose
Combining monosaccharides we get disaccharides:
sucrose = glucose + fructose
lactose = galactose + glucose
maltose = glucose + glucose