1. Disaccharides: Two simple sugar molecules (monosaccharides) can combine to form a disaccharide. This happens through a dehydration reaction, where a water molecule is removed. Some common examples include:
* Sucrose: Glucose + Fructose
* Lactose: Glucose + Galactose
* Maltose: Glucose + Glucose
2. Polysaccharides: Many sugar molecules (monosaccharides) can combine to form long chains called polysaccharides. This also happens through dehydration reactions. Examples include:
* Starch: A storage form of glucose in plants.
* Glycogen: A storage form of glucose in animals.
* Cellulose: A structural component of plant cell walls.
* Chitin: A structural component of insect exoskeletons and fungal cell walls.
3. Other Complex Carbohydrates: Sugars can also combine with other molecules, such as proteins, to form complex carbohydrates like glycoproteins and glycolipids. These molecules play important roles in cell signaling and recognition.
Therefore, the specific product formed when sugar molecules combine depends on the types of sugar molecules involved and the conditions of the reaction.
