Answer:
Gram-postive cell wall
Explanation:
All most all of the Gram positive bacteria have teichoic acid within their cell wall. Teichoic acids are fibres of glycerol phosphate (glycerol teichoic acid) or ribitol phosphate (ribitol teichoic acid). Teichoic acid has ability to attract cations such as magnesium and sodium which creates to rigidity to the cell-wall. It is also involved in regulation of bacteria cell growth.
