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: -Disaccharides are a major source of energy in the diet and are typically thought of as the following three major compounds: sucrose, lactose, and maltose. Sucrose, commonly thought of as table sugar, is the most widely available disaccharide and is the most commonly used naturally occurring sweetener.

Detailed explanation-3: -Disaccharides are those sugars formed by linkage of two monosaccharide. Maltose, lactose, sucrose are the most common disaccharides. Maltose is made up of two units of glucose, lactose is made up of one unit of glucose and one unit of galactose. Sucrose is made up of one unit of glucose and one unit of fructose.

Detailed explanation-4: -So, the correct answer is option (D) starch.

Detailed explanation-5: -Lactose, often called milk sugar (Latin, lac, milk), is a disaccharide found in the milk of many mammals, including humans and cows. The IUPAC name of lactose is 4-O-(-d-galactopyranosyl)-d-glucopyranose.