Cell wall

The video explains the differences in cell wall presence and composition among animal, plant, and bacterial cells. Animal cells lack cell walls, while plant cells have walls made of cellulose, and bacterial cells have walls made of peptidoglycan. Some algae and similar organisms use silica for their cell walls.

Explain the difference between the cell walls of plant cells and bacterial cells.

Which organisms build cell walls from silica?

• Algae

• Bacteria

• Plants

• Animals