Title: Bacterial Capsule: Structure, Function, and Importance Subtitle (your choice): e.g., Microbiology Study

1. Capsule of Bacteria
• Definition, structure, functions, and
importance
Blue layer: Capsule
Inner circle: Cell wall

2. Introduction
• The capsule is an outer protective layer found
in some bacteria.
Blue layer: Capsule
Inner circle: Cell wall

3. Definition
• A well-organized gelatinous layer outside the
cell wall.
Blue layer: Capsule
Inner circle: Cell wall

4. Composition
• Usually polysaccharides; sometimes
polypeptides.
Blue layer: Capsule
Inner circle: Cell wall

5. Structure
• Thick, sticky layer surrounding the cell wall.
Blue layer: Capsule
Inner circle: Cell wall

6. Types of Capsules
• True capsule and slime layer.
Blue layer: Capsule
Inner circle: Cell wall

7. Protection
• Protects from phagocytosis and desiccation.
Blue layer: Capsule
Inner circle: Cell wall

8. Virulence
• Enhances pathogenicity.
Blue layer: Capsule
Inner circle: Cell wall

9. Adhesion
• Helps attachment and biofilm formation.
Blue layer: Capsule
Inner circle: Cell wall

10. Examples
• Streptococcus, Klebsiella, Neisseria
Blue layer: Capsule
Inner circle: Cell wall

11. Laboratory Tests
• Capsule stain and Quellung reaction.
Blue layer: Capsule
Inner circle: Cell wall

12. Conclusion
• Capsule improves survival and virulence.
Blue layer: Capsule
Inner circle: Cell wall