All of the following statements about enzymes are true EXCEPT
A)the presence of enzyme speeds up chemical reactions.
B)most enzymes are proteins.
C)enzymes are highly specific in the reactions that they catalyze.
D)enzymes are biological catalysts.
E)enzymes are permanently modified by the chemical reactions in which they participate.

Question

Quizplus · Accepted Answer

Enzymes are not permanently modified by the chemical reactions in which they participate. They undergo changes in conformation during catalysis, but these changes are usually reversible and do not result in permanent modification of the enzyme's structure.

All of the Following Statements About Enzymes Are True EXCEPT