MBY 251 Lecture 2 Exam Study Guide.
Capsules & Slime layers - answer=polysaccharides
These polysaccharides assist in attachment to solid surfaces
-development and maintenance of biofilms
- Act as virulence factors in certain diseases
- Protects cells from phagocytic cells
- role in providing ...
Capsules & Slime layers - answer✔=polysaccharides
These polysaccharides assist in attachment to solid surfaces
-development and maintenance of biofilms
- Act as virulence factors in certain diseases
- Protects cells from phagocytic cells
- role in providing resistance to desiccation
- Food reserves
Capsule - answer✔=tightly packed matrix
=exclude small particles (india ink)
=firmly attached to cell walls
some covalently bound to peptidoglycan
Slime layer - answer✔=loosely packed matrix
=more difficult to see
=loosely attached>can be lost
Fimbriae & Pilli - answer✔=filamentous protein structures
Fimbriae - answer✔*attachment> stick to surfaces/form pellicles
*common in pathogens
>Salmonella
>Neisseria gonorrhoea
>Bordetella pertussis
Pilli - answer✔*longer than fimbriae
*few per cell
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