Polysaccharides and description of its main function in animals?

Polysaccharides are complex carbohydrates made up of long chains of monosaccharides. They are found in a variety of foods, including plants, animals, and microorganisms. Polysaccharides are the most abundant type of carbohydrate in nature and serve a variety of functions in animals.

Main functions of polysaccharides in animals:

1. Energy storage: Polysaccharides are the primary form of energy storage in animals. They are broken down into monosaccharides, which are then used as a source of energy. Glycogen is the main storage polysaccharide in animals and is found in the liver and skeletal muscle.

2. Structural support: Polysaccharides provide structural support for animal tissues. They are found in the cell walls of plants and in the connective tissues of animals. Chitin is a polysaccharide that is found in the exoskeletons of insects and crustaceans. Collagen is a polysaccharide that is found in the skin, tendons, and bones of animals.

3. Lubrication: Polysaccharides can act as lubricants in animal joints and other moving parts. Mucin is a polysaccharide that is found in saliva and other bodily fluids.

4. Protection: Polysaccharides can protect animals from infection and other environmental hazards. Mucus is a polysaccharide that helps to protect the respiratory and digestive tracts from infection.

5. Communication: Polysaccharides can be used for communication between animals. Pheromones are polysaccharides that are used by some animals to attract mates or repel predators.

Polysaccharides are essential for the survival of animals. They provide energy, structural support, lubrication, protection, and communication.