Arrangements 。Pairs:diplococci,. diplobacilli 。Clusters: staphylococci 。Chains: streptococci, streptobacilli
• Pairs: diplococci, diplobacilli • Clusters: staphylococci • Chains: streptococci, streptobacilli Arrangements
Glycocalyx 。Outside cell wall 。Usually sticky 。A capsule is neatly organized 。A slime layer is unorganized loose (a 。Extracellular polysaccharide allows cell to attach Capsules prevent phagocytosis Figure 4.6a,b
• Outside cell wall • Usually sticky • A capsule is neatly organized • A slime layer is unorganized & loose • Extracellular polysaccharide allows cell to attach • Capsules prevent phagocytosis Glycocalyx Figure 4.6a, b
Flagella Flagellum 。Outside cell wall Filament 。Made of chains of flagellin 。Attached to a protein -Hook hook Cell wall Basal body Peptidoglycan 。Anchored to the wall Outer membrane and membrane by the basal body Plasma membrane Cytoplasm Figure 4.8
• Outside cell wall • Made of chains of flagellin • Attached to a protein hook • Anchored to the wall and membrane by the basal body Flagella Figure 4.8
Flagella Arrangement 人 (a)Monotrichous (b)Amphitrichous (c)Lophotrichous (d)Peritrichous Figure 4.7
Flagella Arrangement Figure 4.7