Question

lactose is a disaccharide and is made of smaller sugar monomers. which organic molecule is lactose?
nucleic acid
protein
lipid
carb

Explanation:

Lactose is a disaccharide. Disaccharides are a type of carbohydrate (carb), as carbohydrates include monosaccharides (single sugar units), disaccharides (two sugar units), and polysaccharides (many sugar units). Nucleic acids are for genetic information, proteins are made of amino acids, and lipids are fats/oils - none of these match lactose's structure as a sugar - based molecule.

Answer:

Carb (the option labeled "Carb" should be selected, as lactose is a carbohydrate)