![]() The cell walls of eukaryotic microbes are typically composed of a single ingredient, like the cellulose found in algal cell walls or the chitin in fungal cell walls. But both bacterial cell wall types contain additional ingredients as well, making the bacterial cell wall a complex structure overall, particularly when compared with the cell walls of eukaryotic microbes. This particular substance hasn’t been found anywhere else on Earth, other than the cell walls of bacteria. It’s an additional layer that typically provides some strength that the cell membrane lacks, by having a semi-rigid structure.īoth gram positive and gram negative cell walls contain an ingredient known as peptidoglycan (also known as murein). \)Ī cell wall, not just of bacteria but for all organisms, is found outside of the cell membrane.
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