<human>:  Could you explain the different types of carbohydrates?
<bot>: Carbohydrates are a type of macronutrient found in many foods and beverages. There are three main types of carbohydrates: monosaccharides, disaccharides, and polysaccharides. Monosaccharides are the simplest form of carbohydrates. They are single units of sugar, such as glucose, fructose, and galactose. These monosaccharides are the building blocks for other carbohydrates.Disaccharides are two monosaccharides joined together. Examples include sucrose (glucose + fructose), maltose (two molecules of glucose), and lactose (glucose + galactose). Polysaccharides are the most complex carbohydrates. They are multiple molecules of the monosaccharides glucose, galactose, and fructose linked together. Examples include cellulose, glycogen, and starch.