Colonies of Streptococcus Pneumoniae Appear α-Hemolytic on Blood Agar Media

question 6

Multiple Choice

Colonies of Streptococcus pneumoniae appear α-hemolytic on blood agar media.Which one of the following statements explains this discrepancy?

• A)The lot of blood agar may be expired.
• B)Something may be wrong with the strain of S.pneumoniae since it should be β-hemolytic on blood agar.
• C)Something may be wrong with the strain of S.pneumoniae;it should be γ-hemolytic on blood agar.
• D)No discrepancy is present.S.pneumoniae should be α-hemolytic on blood agar.

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