is e coli catalase positive or negative ?
Question
is e coli catalase positive or negative
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Bacteriology
2 years
2022-11-13T09:58:00+00:00
2022-11-13T09:58:00+00:00 1 Answer
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Answer ( 1 )
Escherichia coli (E. coli) is catalase positive. Catalase is an enzyme that helps break down hydrogen peroxide into water and oxygen. When hydrogen peroxide is added to a bacterial culture, catalase-positive bacteria like E. coli produce bubbles of oxygen gas due to the catalytic action of the enzyme. This is a characteristic biochemical test used to differentiate between different bacterial species based on their enzyme activity.