What end of sugars are removed when sugar molecules join to form either disaccharides?

When sugar molecules join to form disaccharides, the hydroxyl (–OH) group from one sugar and a hydrogen atom (–H) from another are removed, resulting in the formation of a glycosidic bond. This process is known as condensation or dehydration synthesis, as it releases a molecule of water (H₂O) in the reaction. The specific ends involved are typically the anomeric carbon of one sugar and a hydroxyl group from the other.