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    Question

    Most enzymes are active in pH range a)   

    3.5-9.5 b)    4.5-8 c)    4-7 d)    3.5-6
    A Only a is correct Correct Answer Incorrect Answer
    B Only b is correct Correct Answer Incorrect Answer
    C Only c is correct Correct Answer Incorrect Answer
    D A & B both are correct Correct Answer Incorrect Answer
    E All are correct Correct Answer Incorrect Answer

    Solution

    Most other enzymes function within a working pH range of about  pH 5-9  with neutral pH 7 being the optimum.

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