Which of the Following Statements Concerning Enzymes Is FALSE

Multiple Choice

Which of the following statements concerning enzymes is FALSE?

A) They can be denatured if the pH of their environment is too high or too low.
B) They are usually, but not always, proteins.
C) They form a temporary intermediate compound with a substrate.
D) They can be used to catalyze a chemical reaction over and over again.
E) They always function best at 37°C.