General Science question

[PressPforPi]

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5. Which of the following statements about enzymes is not true?


A. Enzymes are catalysts.
B. Almost all enzymes are proteins.
C. Enzymes operate most efficiently at optimum pH.
D. Enzymes are destroyed during chemical reactions.

Says the answer is A. How so?

 

[tttgo]

Isn't the answer d? I thought enzymes were catalysts.

 

[ilovemcat]

5. Which of the following statements about enzymes is not true?


A. Enzymes are catalysts.
B. Almost all enzymes are proteins.
C. Enzymes operate most efficiently at optimum pH.
D. Enzymes are destroyed during chemical reactions.

Says the answer is A. How so?

I'm 110% sure that the answer is D. The answer they provided is an error. Enzymes are never consumed during a reaction. A, B, and C are all true statements.

 

[PressPforPi]

I thought so too guys lol.

 

[movax]

Which reference book has this wrong answer in it, for future reference?