Pneumococus can be differentiated from streptococcus by________________?
Correct answer: D. Bile solubility
- A. Type of hemolysis
- B. Gram staining
- C. Growth characteristics
- D. Bile solubility
Explanation
Streptococcus pneumoniae is identified among alpha-haemolytic streptococci by its bile solubility, along with optochin sensitivity and a capsule. Haemolysis alone is insufficient because viridans streptococci may also be alpha-haemolytic.
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