Simplify the following text for a Grade 12 native English-speaking person.
Original: Monosaccharides are the building blocks of disaccharides like sucrose ( common sugar ) and polysaccharides ( such as cellulose and starch ) .
Simplified: Monosaccharides are the building blocks of disaccharides such as sucrose and polysaccharides ( such as cellulose and starch ) .