Explain how mono-, di- and polysaccharides differ.
Answer to this question needs to be very long but here is a short story.
Monosaccharide is a simple sugar consist only of one unit. They serve as building blocks for more complex carbohydrate forms.
Ribose and Deoxyribose - RNA, DNA
and so on...
Disaccharides are a group of sugars composed of two monosaccharide groups linked together.
Maltose = Glucose + Glucose
Sucrose = Glucose + Fructose
Lactose = Glucose + Galactose
Polysaccharides are complex carbohydrates composed of numerous monosaccharides combined through the loss of water molecules.