What is the monomer of sucrose?

The correct identity of the monomer of sucrose involves recognizing the components that make up this disaccharide. Sucrose is composed of two monosaccharides: glucose and fructose. These two sugars combine through a dehydration synthesis reaction, where a molecule of water is released.

In this context, sucrose is not made from just one type of monomer; rather, it requires both glucose and fructose for its formation. While fructose does play a critical role as part of the structure of sucrose, it is essential to understand that glucose is also vital, as each sugar contributes to the overall molecule.

Looking at the choices provided, the best characterization of the sugars involved in forming sucrose retains important nuances: sucrose's structure arises from the combination of glucose and fructose, making it clear that describing one as the sole monomer may be misleading in this context.

Thus, while fructose is one component of sucrose, the complete picture includes glucose as well. To fully grasp the chemical composition of sucrose, both glucose and fructose must be considered essential.