Here's why:

* Monosaccharides are the simplest form of carbohydrates. They are single sugar units like glucose, fructose, and galactose.

* Disaccharides are formed when two monosaccharides join together. Common examples include sucrose (table sugar), lactose (milk sugar), and maltose (found in malt).

Carbohydrates are a major source of energy for the body and play a vital role in various biological processes.