Streptococcus pneumoniae catalase status?

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Study for the NBEO Microbiology exam. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Streptococcus pneumoniae catalase status?

Explanation:
Streptococcus pneumoniae lacks the enzyme catalase, so it is catalase negative. In the lab, the catalase test uses hydrogen peroxide; catalase-positive organisms (like Staphylococcus species) rapidly bubble as they break down H2O2 into water and oxygen. Streptococcus pneumoniae shows no bubbling, indicating a negative result. This helps distinguish it from catalase-positive cocci. Therefore, the catalase status is negative.

Streptococcus pneumoniae lacks the enzyme catalase, so it is catalase negative. In the lab, the catalase test uses hydrogen peroxide; catalase-positive organisms (like Staphylococcus species) rapidly bubble as they break down H2O2 into water and oxygen. Streptococcus pneumoniae shows no bubbling, indicating a negative result. This helps distinguish it from catalase-positive cocci. Therefore, the catalase status is negative.

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