Are yeast species from the Genus Saccharomyces "Catalase positive" or "Catalase negative" from the Catalase test ?
Question
Are yeast species from the Genus Saccharomyces "Catalase positive" or "Catalase negative" from the Catalase test ?
Solution
Yeast species from the Genus Saccharomyces are "Catalase positive". This means that they produce the enzyme catalase, which helps them to break down hydrogen peroxide, a harmful byproduct of metabolism. The Catalase test is a simple procedure where a sample is mixed with hydrogen peroxide. If the sample bubbles or foams, it is considered "Catalase positive". This is because the catalase enzyme is breaking down the hydrogen peroxide into water and oxygen, which forms the bubbles. Saccharomyces, like many other yeasts and fungi, are able to do this and are therefore "Catalase positive".
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