The eukaryotic cell wall is a complex structure that provides support and protection to the cell. It is composed of various complex carbohydrates and structural proteins. Cellulose, chitin, and lignin are all components of the eukaryotic cell wall. Cellulose is present in the cell wall of plant cells, while chitin is found in the cell wall of fungi and some animals. Lignin is present in the secondary cell wall of plants. Lipids, on the other hand, are not a component of the eukaryotic cell wall. Lipids are a class of biomolecules that include fats, waxes, and steroids and play an essential role in energy storage and membrane structure in cells.