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:

• Monosaccharides are single - sugar molecules (e.g., glucose, galactose).
• Disaccharides are formed by the combination of two monosaccharides. Since lactose is formed by combining galactose and glucose (two monosaccharides), it fits the definition of a disaccharide.
• A monomer is a general term for a single unit that can combine to form polymers. While monosaccharides are monomers for carbohydrates, the more specific term for lactose (a combination of two monosaccharides) is disaccharide.
• Starch is a polysaccharide (a long - chain polymer of monosaccharides, usually glucose).

Answer:

disaccharide