ï»¿ Describe the functions of polysaccharides in living organs. from Biology Biomolecules Class 11 Assam Board

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Describe the functions of polysaccharides in living organs.

The polysaccharides perform variety of functions. These are :

1. Reserve food-materials. Some of the polysaccharides reserve food in animal and plant cells. The reserve food material in animals is glycogen whereas starch is of the plants.

2. Fuel. They are used as fuel. These polysaccharides are converted into monosaccharides and are oxidized for the release of energy.

3. Structural component. Some of the polysaccharides are structural component of the cells. For example some polysaccharides are involved in the formation of biomembranes. Cellulose and chitin are the main structural components.

4. Protective coat. Cell membrane made up of polysaccharides protects the cell.

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Name one monosaccharide which provides energy ?

Glucose
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What are major elements of a cell ?

Carbon, hydrogen, oxygen and nitrogen are the major elements of a cell.
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Give the names of two monosaccharide sugars.

Fructose and glucose are two monosaccharides
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What is the percentage of nucleic acids in cells ?

5 - 7 percent
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What is the general formula of carbohydrates ?

The carbohydrate has a general formula - CnH2nOn Or (CH2O)n.
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