Which of the following enzymes has the lowest pH optimum?

Question

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Pepsin is an enzyme that is produced and secreted by the stomach lining and is responsible for breaking down proteins. Its optimal pH range is between 1.5 and 2.0, which is the lowest of all the choices given. This acidic environment is necessary for pepsin to function properly and efficiently break down proteins. The other enzymes listed have higher pH optima, with lipase and sucrase having neutral to slightly alkaline optima (around pH 7), and amylase and trypsin having more acidic but still higher optima (around pH 6-7 and 8-9, respectively).

Which of the Following Enzymes Has the Lowest PH Optimum