Identifying Disaccharides

Carbohydrates are essential biomolecules that primarily serve as energy sources in fundamental biological processes. They can form structures, provide energy storage, and play crucial roles in cellular communication. A particular carbohydrate, glucose, is a pivotal hexose monosaccharide utilized by cells to generate ATP through various metabolic pathways, including glycolysis and the TCA cycle.

Beyond glucose, carbohydrates can exist in more complex forms, such as disaccharides, oligosaccharides, and polysaccharides. Their structures can vary significantly, influencing their digestion, absorption, and overall functional properties in organisms.

Considering these functions and types, which of the following carbohydrates is categorized specifically as a disaccharide?