HOSA Nutrition Assessment Practice Test

The correct answer is sucrose, which is classified as a disaccharide because it is composed of two monosaccharide units: glucose and fructose. Disaccharides are carbohydrates formed by the combination of two simple sugars through a glycosidic bond, and sucrose is a prime example of this. It is commonly found in many plants and is often referred to as table sugar, illustrating its importance in nutrition and dietary sources.

Glucose and fructose, on the other hand, are both monosaccharides. They are the simplest forms of carbohydrates and cannot be further hydrolyzed to simpler sugars. Starch, while a carbohydrate, is a polysaccharide, meaning it consists of long chains of glucose molecules. This classification highlights the structural differences between monosaccharides, disaccharides, and polysaccharides in terms of their complexity and composition. Thus, recognizing sucrose as a disaccharide is essential in understanding carbohydrate classification and its implications in nutrition.