Which of these is a source of disaccharides?

The correct answer is indeed a source of disaccharides. Sucrose is a well-known disaccharide composed of two monosaccharides: glucose and fructose. It is commonly found in many plants and is a major component of table sugar. Disaccharides are carbohydrates formed when two monosaccharide molecules undergo a condensation reaction, resulting in the formation of a glycosidic bond.

Fructose, glucose, and galactose are all monosaccharides, meaning they are the simplest form of carbohydrates and cannot be further hydrolyzed into smaller sugar units. Thus, they do not qualify as sources of disaccharides. For understanding culinary medicine, recognizing the distinction between monosaccharides and disaccharides is essential, especially when considering dietary sources of carbohydrates and their impact on health.