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Questions and Answers
Which strain of Streptococcus pneumoniae is virulent?
Which strain of Streptococcus pneumoniae is virulent?
- S strain (correct)
- Neither S nor R strain
- R strain
- Both S and R strains
Who studied Streptococcus pneumoniae in 1928?
Who studied Streptococcus pneumoniae in 1928?
- Frederick Griffith (correct)
- Dr Matumba Mashudu
- McGraw-Hill Education
- None of the above
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Study Notes
Virulence of Streptococcus pneumoniae
- The virulent strain of Streptococcus pneumoniae is primarily the encapsulated type, which possesses a polysaccharide capsule that protects it from phagocytosis by the immune system.
- Encapsulated strains are more pathogenic compared to non-encapsulated strains, contributing to pneumonia, meningitis, and sepsis.
Historical Study of Streptococcus pneumoniae
- Frederick Griffith studied Streptococcus pneumoniae in 1928, leading to significant discoveries about bacterial transformation.
- Griffith's experiment demonstrated how non-virulent bacteria could take on virulent properties through the uptake of genetic material from virulent strains.
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