Multiple choice

Which of the following tests can be used in the differentiation of Staphylococcus aureus and Streptococcus pyogenes?

  1. Indole test

  2. Voges-Proskauer test

  3. Cytochrome C oxidase test

  4. Catalase test

  5. All of the above
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D Correct answer
Explanation

Catalase test is used to detect the presence of the enzyme catalase in bacteria. Catalase serves to neutralize the bactericidal effects of hydrogen peroxide. It is a primary test used in the differentiation of Staphylococci and Streptococci. Staphylococcus aureus tests positive while Streptococcus pyogenes tests negative for catalase test.

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