In which of the following groups are all polysaccharides?
Correct answer: D. Glycogen, Cellulose and Starch
- A. Sucrose, Glucose and Fructose
- B. Maltose, Lactose and Fructose
- C. Glycogen, Sucrose and Maltose
- D. Glycogen, Cellulose and Starch
Explanation
Polysaccharides are complex long-chain carbohydrates that are formed by dehydrate synthesis or polymerization of more than 10 but generally a very large number of units called monosaccharides. Starch, glycogen, and cellulose are all polysaccharides. Starch is a glucose homopolysaccharide which is the main reserve food of plants. Glycogen is also a glucosan homopolysaccharide which is the major reserve food of fungi, animals, and some bacteria. It is also called animal starch. Cellulose is the structural polysaccharide of plant cell walls, some fungi, protists. It is a fibrous glucosan homopolysaccharide of high tensile strength.
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About Carbohydrates
Carbohydrates are organic compounds classified as monosaccharides, disaccharides and polysaccharides according to their structure and hydrolysis products. The topic covers glycosidic bonds, glucose and fructose, sucrose, lactose and maltose, starch, glycogen and cellulose, along with their roles in energy storage, structural support and food tests.
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