Final answer:
Cellulose functions as a structural component in cell walls, chitin forms the outer skeleton of arthropods and fungi, and glycosaminoglycans contribute to the extracellular matrix.
Step-by-step explanation:
The function of the polysaccharides cellulose, chitin, and glycosaminoglycan varies:
- Cellulose: Cellulose is a structural component of cell walls in organisms. It provides support and rigidity to plant cells and is found in the cell walls of plants, green algae, and some bacteria.
- Chitin: Chitin serves as the outer skeleton of arthropods, including insects and crustaceans, and forms the cell walls of fungi. It provides structural support and protection.
- Glycosaminoglycan: Glycosaminoglycans are found in the extracellular matrix and serve as components of connective tissues. They contribute to the gel-like consistency of tissues and help with lubrication and shock absorption.