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Bacterial Cell Wall

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Monthly Archives: January 2014

31 Jan

The motility of bacteria is provided by the flagella, a rigid helical structure that extends up to 10  microns out from the cell.  Flagella allow cells to move towards nutrients or away from harmful substances such as acids in a … Continue reading

17 Jan

Acid fast staining is used to stain bacteria with mycolic acid in their cell walls.  The Ziehl-Neelsen staining method is used which involves mixing carbolfuchsin with phenol and heating the cells for 5 minutes.  Phenol allows the penetration of carbolfuchsin … Continue reading

03 Jan

Bacteria such as mycobacterium have cell walls that contain a high lipid content.  One of the cell wall lipids is a waxy material called mycolic acid.  Mycolic acid is a complex lipid that is made of fatty acids and fatty … Continue reading