Certified Cheese Professional Practice Exam

Sucrose is composed of which two sugars?

1. Glucose and Galactose

2. Glucose and Fructose

3. Fructose and Lactose

4. Galactose and Maltose

The correct answer is: Glucose and Fructose

Sucrose is a disaccharide sugar composed of two monosaccharides: glucose and fructose. The linkage between these two sugars occurs through a glycosidic bond, specifically an alpha-1,2 link from the anomeric carbon of glucose to the second carbon of fructose. This combination is significant because sucrose is commonly found in many plants and is widely used as table sugar. The other options refer to different combinations of sugars that do not accurately describe sucrose. For instance, galactose and glucose together form lactose, commonly found in milk, while fructose is a component of high fructose corn syrup but does not pair with lactose in this context. Recognizing the specific composition nuances of different sugars is essential in understanding many aspects of food science, including dairy and cheese production.