Catalase test is used to differentiate ?: (A) Staphylococcus aureus from staphylococcus epidermidis, (B) Staphylococci from streptococci, (C) Streptococcus pyogenes from other streptococci, (D) None of the above
Answer is B. Ans. is 'b' i.e., Staphylococci from streptococci The catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism