Question:
The stored food in animals is called
The stored food in animals is called
Updated On: Aug 15, 2022
- cellulose
- starch
- glucose
- glycogen
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The Correct Option is D
Solution and Explanation
Glycogen is the reserve food in animals that why it is also called animal starch. It is found mainly in liver and muscles. Chemically it is analogous to starch but it is more extensively branched than amylopectin. The linkage and monosaccharides units are similar. About 50015000 glucose units make up glycogen. It is non-reducing sugar and gives red colour with iodine. Starch, a polymer is D-glucopyranose unit linked by $\alpha-1,4-$ glycosidic linkages. It consists of a mixture of amylose and amylopectin of $1: 4$ ratio. Starch in partial hydrolysis results in substances called dextrins. It is easily digested thats why given to infants for feeding or patients. Cellulose is the most important structural components of the cell wall of plants. It is a linear polymer of $\beta$ D glucose units connected through ($\beta-1,4-$ glycosidic linkage. Glucose or D-glucose is most widely distributed sugar. It is known by the name of blood sugar also. It is a component of sucrose.
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Concepts Used:
Polysaccharides
Polysaccharides are the most abundant hydrocarbons that exist in our food. They are long chains of hydrocarbons inclusive of smaller units called monosaccharides or monomers, related to each other through glycosidic linkages. Cellulose, starch, chitin, and glycogen are the most common polysaccharides found in food.
Characteristics of Polysaccharides:
- Desiccation does not cause Polysaccharides to structure crystals.
- They do not have a candied flavor.
- Water cannot infiltrate the molecules due to the numerous hydrogen bonds, making them hydrophobic.
- They are osmotically inactive and close-packed inside the cells. Many are water-insoluble.
- They are collections of hydrogen, carbon, and oxygen. 2:1 is the ratio of hydrogen to oxygen.
- They are carbohydrates with a molecular weight comparatively more excessive than other compounds. It is also possible to extract a white powder out of it.
Types of Polysaccharides:
- Homopolysaccharides
- Heteropolysaccharides