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Question

Hydrolytic enzymes which act on low pH are called:

A
Protease
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B
Alpha- Amylase
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C
Hydrolases
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D
Peroxidases
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Solution

The correct option is C Hydrolases
Hydrolases are hydrolytic enzymes, biochemical catalysts that use water to cleave chemical bonds, usually dividing a large molecule into two smaller molecules. Examples of common hydrolases include esterases, proteases, glycosidases, nucleosidases, alpha amylase, and lipases. The enzymes work at different optimum pH levels. For example, salivary amylase or alpha amylase works best just below pH 7. Stomach protease works best at around pH 1.6. So although these enzymes have different functions, they can be categorized as hydrolases in general. So the most appropriate answer here is hydrolases.
Peroxidases are a large family of enzymes. The activity of peroxidase and polyphenol oxidase was maximum at pH 6.5 and 7.0, respectively, and no activity was detected at pH 2.5 and 9.5.

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