Gram positive bacteria possess a thick cell wall containing many layers of peptidoglycan and teichoic acids. In contrast, Gram negative bacteria have a relatively thin cell wall consisting of a a few layers of peptidoglycan surrounded by an outer lipid membrane containing lipopolysaccharides and lipoproteins. Most bacteria have the Gram negative cell wall; only organisms from the Phyla Firmicutes and Actinobacteria (previously know as the or low G+C and high G+C Gram positive bacteria, respectively).
How many layers of cell walls bacteria have?
Bacteria don't have any cell walls. Plants do.
Reply:gram positive bacteria has two layers
peptidoglycan and teichoic acid
gram negative bacteria has three layers first outer membrane (consists of phospholipid , lipopolysachharide,proteins)
secondly lipo protein layer and finally peptidoglycan layer
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