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While performing an experiment on the enzyme amylase, Macy uses three different pH solutions: pH 3.0, pH 4.0, and pH 6.7. She finds that all the starch is broken down fastest at pH 6.7. How would you justify these findings?

AThe optimum pH for amylase is pH6.7, at which the rate of reaction is the highest.
BThe minimum pH for the amylase is pH6.7, after which the reaction takes minimum time for completion.
CThe optimum pH of amylase is between pH3.0 and pH 4.0, at which the enzyme takes maximum time for completion

Verified Answer :

taskmasters

I think the correct answer from the choices listed above is option A. The optimum pH for amylase is pH6.7, at which the rate of reaction is the highest since the function of this enzyme is to break down starch so at the pH where starch is broken down faster should be the optimum pH.

Answer: The correct answer is option(A).

Explanation:

Optimum pH of an enzyme is defined as pH value at which activity of an enzyme is maximum or we can also say that at optimum pH reaction rate of an enzyme is highest.

Macy from her experiment observed that the starch is broken down fastest at pH 6.7. Which means that at 6.7 pH, enzyme named amylase has highest rate of  breaking down the starch in a chemical reaction.

Hence, the correct answer is option (A).

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