Which of the following statements is not true of enzymes?
A)They are essential to all life processes.
B)They are all proteins.
C)They are involved in synthesis reactions only.
D)They are all catalysts.

Question

Quizplus · Accepted Answer

Enzymes are not involved in synthesis reactions only; they can also catalyze degradation (breakdown) reactions. Therefore, statement C is not true. All the other statements are true. Enzymes are essential to all life processes, they are mostly proteins (although some RNA molecules also have catalytic activity), and they are all catalysts that accelerate chemical reactions without being consumed by them. Enzymes are not only involved in synthesis reactions, but also in breakdown reactions. Therefore, statement C is not true.

Which of the Following Statements Is Not True of Enzymes