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1. Staphylococcus species can be distinguished from Streptococcus, Enterococcus, and Lactococcus species on the basis of...

1. Staphylococcus species can be distinguished from Streptococcus, Enterococcus, and Lactococcus species on the basis of catalase activity.

a) True

b) False

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Answer #1

True. Catalase is a enzyme which removes oxygen from hydrogen peroxide ( reduction of hydrogen peroxide) to form water and oxygen. Staphylococcus is catalase positive bacteria while streptococcus, lactococcus, and streptococcus bacteria are catalase negative. When these bacteria are placed in a culture with hydrogen peroxide the catalase positive bacteria produces oxygen and bubble are produced while catalase negative bacteria do not produce the bubble.

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