What makes up the cell walls of algae?

Algal cell walls interact with different ions and water through a variety of fibriliar, matrix, and crystalline polymer interactions.

Many marine red and green algae have cell walls that contain mannans in the form of microfibrils.

Brown algae's cell walls are typically composed of aliginic acid, though they can also contain phenoltanins.

The cell walls of the majority of algae contain sulphonated polysaccharides such as agarose, carrageenan, porphyran, furcelleran, and funoran.

Additional substances that can build up in the walls of algal cells are calcium ions, sporopollenin, and Dylan's.

The red algae has extensive matrix polysaccharides, such as carrageenan and agar, and complex composite cell walls composed of cellulose, xylans, or mannan fibrils.

Algae's cell walls are mostly made of cellulose, though they also contain other polysaccharides like pectin and alginates.