Yes they are; not because they are monosaccharides, but because the are saccharides or sugars.
Monosaccharides .
Monosaccharides are carbohydrates, not proteins or lipids. They are the simplest form of carbohydrates and serve as the building blocks for more complex carbohydrates like disaccharides and polysaccharides.
Carbohydrates contain units called monosaccharides. Monosaccharides are simple sugars that serve as the building blocks of complex carbohydrates.
The three classes of carbohydrates are monosaccharides, disaccharides, and polysaccharides
monosaccharides
starches and monosaccharides are carbohydrates, and monosaccharides make up starches, which is a polysaccharide.
Carbohydrates
Carbohydrates contain units of monosaccharides. Monosaccharides are the building blocks of carbohydrates and include sugars like glucose, fructose, and galactose.
The composition of carbohydrates include carbon, hydrogen and oxygen. They are made from simple sugars which are known as monosaccharides.
Monosaccharides
fructose
Monosaccharides are the most basic units of carbohydrates.