2.3 - A - Polysaccharides
Polysaccharides (aka carbohydrates) are a class a of biomolecule that is formed when monosaccharides (aka simple sugars) link together via condensation reactions (see 2.1). Examples include:
Disaccharides are made up of two monosaccharides and can include maltose (glucose+glucose), sucrose (glucose+fructose) and lactose.
Di- and Polysaccharides form when condensation reactions take place between sugar subunits. This involves water being removed from the hydroxyl group of two molecules (see below). This process is anabolic and so requires the consumption of ATP.