Question

what is the subunit of a carbohydrate?

Explanation:

Carbohydrates are biological macromolecules. Their basic building blocks (subunits) are simple sugar molecules, specifically monosaccharides like glucose, fructose, and galactose. These monosaccharides link together via glycosidic bonds to form larger carbohydrates such as disaccharides, oligosaccharides, and polysaccharides.

Answer:

Monosaccharides (e.g., glucose, fructose, galactose)