High School

How many monosaccharides bond together to form one disaccharide?

A. 1
B. 4
C. 2
D. 10

Answer :

To determine how many monosaccharides bond together to form one disaccharide, let's break it down:

1. Understanding Monosaccharides and Disaccharides:
- A monosaccharide is the simplest form of carbohydrate; it's a single sugar unit. Examples include glucose, fructose, and galactose.
- A disaccharide, on the other hand, is formed when two monosaccharide molecules bond together. Some common examples of disaccharides are sucrose (which is glucose + fructose) and lactose (which is glucose + galactose).

2. The Bonding Process:
- When two monosaccharides combine, they typically do so through a dehydration synthesis reaction. In this process, a water molecule is removed, allowing the two sugar molecules to form a bond, creating a disaccharide.

3. Conclusion:
- Therefore, two monosaccharides are needed to bond together to form one disaccharide.

So the correct answer to the question is: 2.