Question

carbohydrates are formed when several ____________ subunits are linked together. fill in the blank

Explanation:

Carbohydrates are macromolecules made up of smaller sugar units. Monosaccharides are the simplest carbohydrates and serve as the building - blocks or subunits that link together to form larger carbohydrates like disaccharides and polysaccharides.

Answer:

monosaccharide