Final answer:
Monosaccharides are simple sugars that cannot be hydrolyzed to give a simpler sugar. They are the building blocks for more complex carbohydrates.
Step-by-step explanation:
Monosaccharides are the class of sugars that cannot be hydrolyzed to give a simpler sugar. These simple carbohydrates are the building blocks for more complex carbohydrates. An example of a monosaccharide is glucose, which cannot be further broken down into simpler sugars.