Hücreleri
Hücreleri, also known as "cell walls" in English, are rigid structures found in the cell membranes of plant cells, fungi, bacteria, and some protists. They provide structural support and protection to the cell, maintaining its shape and preventing it from bursting under osmotic pressure. Hücreleri are composed mainly of cellulose in plant cells, chitin in fungi, and peptidoglycan in bacteria. In some algae and protists, hücreleri can be made of other polysaccharides or proteins. The structure and composition of hücreleri can vary significantly between different organisms, reflecting their evolutionary adaptations to different environments.