NEET 2013
- Exam
- NEET
- Year
- 2013
- Subject
- Botany
- Chapter
- Biological Classification
NEET 2013 · Botany · Biological Classification
Why is a capsule advantageous to a bacterium?
Why is a capsule advantageous to a bacterium?
Options
- AIt protects the bacterium from desiccation.
- BIt provides means of locomotion.
- CIt allows bacterium to "hide" from host's immune system.
- DIt allows the bacterium to attach to the surface.
Correct answer
C. It allows bacterium to "hide" from host's immune system.
Step-by-step solution
S-strain bacteria or virulent bacteria are capsulated, made of polysaccharides and amino acids. It is tough and thick mucilage covering, providing protection to bacteria against host immune system.
Related Theory
The encapsulation makes bacteria more pathogenic. It protects bacteria from phagocytosis by macrophages. Capsule increases tolerance from desiccation. It helps bacteria adhere to surfaces. So capsule is the major determinant of virulence.