Question

lactose (milk sugar) is a carbohydrate that is formed by combining galactose and glucose. which term best describes this molecule? monosaccharide disaccharide monomer starch

Explanation:

Lactose is formed by combining two monosaccharides (galactose and glucose). A disaccharide is a carbohydrate composed of two monosaccharide units. A monomer is a single unit (like a single monosaccharide). Starch is a polysaccharide (many monosaccharide units). So lactose, being two - monosaccharide units, is a disaccharide.

Answer:

disaccharide