Translation "ćelijski zid" to English

In plants, the tough outer surface of the cell. It is constructed from a mesh of cellulose and is very strong and relatively inelastic. Most living cells are turgid (swollen with water; see turgor) and develop an internal hydrostatic pressure (wall pressure) that acts against the cellulose wall. The result of this turgor pressure is to give the cell, and therefore the plant, rigidity. Plants that are not woody are particularly reliant on this form of support.
The cellulose in cell walls plays a vital role in global nutrition. No vertebrate is able to produce cellulase, the enzyme necessary for the breakdown of cellulose into sugar. Yet most mammalian herbivores rely on cellulose, using secretions from microorganisms living in the gut to break it down. Humans cannot digest the cellulose of the cell walls; they possess neither the correct gut microorganisms nor the necessary grinding teeth. However, cellulose still forms a necessary part of the human diet as fiber (roughage).
A thin membrane around the cytoplasm of a cell; controls passage of substances in and out of the cell; SYN. cell membrane, plasma membrane.