Diagrammatic representation of the cell wall,cell membrane,and a flagellum of a Gram-negative bacterium. Gram-negative bacteria have an outer lipopolysaccharide layer (above,yellow),as an outer membrane to the cell wall. Beneath it is the peptidoglycan cell wall,rigid & protective,made of sheets of glycan (sugar,white bricks) with peptide cross-links. The true cell membrane is at bottom (yellow,phospholipid). Pathogens attach to both membranes,molecules diffuse through,& anti- gens are found on them. The rotor mechanism of a flagellum is portrayed (red and blue); it rotates the flagellum like a propeller for movement | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Leroy, Francis / Biocosmos |
Taille de l’image : | 4721 px × 3680 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |