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04.06.2020 • 
Biology

The activity of an enzyme was examined in the laboratory as it catalyzed the formation of the product B, from the substrate A. This reaction was carried out in an aqueous solution consisting of water and copper sulfate at a pH of 7. While attempting to repeat the experiment, a biochemist uses a solution of pure distilled water (pH = 7) and observes that the rate of formation of B has decreased dramatically. Which is the most likely possible explanation for this result?A. The enzyme’s optimal activity is not at pH 7.B. Sulfate ions inhibit binding of A to the enzyme’s active site.C. The enzyme needs copper ions to act as cofactors for optimal enzyme activity.D. The enzyme needs the presence of a coenzyme to function.E. B is unstable and cannot be measured.

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