BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The three major disaccharides are sucrose, lactose, and maltose. Sucrose, which is formed following photosynthesis in green plants, consists of one molecule of glucose and one of fructose bonded via an -, -linkage.

Detailed explanation-2: -Reason: Sucrose is a disaccharide consisting of glucose and fructose units.

Detailed explanation-3: -Sucrose and trehalose are examples of non-reducing disaccharides because their glycosidic bond is between their respective hemiacetal carbon atoms. The reduced chemical reactivity of the non-reducing sugars in comparison to reducing sugars, may be an advantage where stability in storage is important.

Detailed explanation-4: -Carbohydrates which upon hydrolysis yield two molecules of the same or different monosaccharides are called disaccharides. For example, sucrose on acid hydrolysis give one molecule of glucose and fructose.