Question

Identify the correct statement regarding enzymes

• A. Enzymes are specific biological catalysts that can normally function at very high temperatures $ (T\sim 1000\text{ }K) $
• B. Enzymes are normally heterogeneous catalysts that are very specific in their action
• C. Enzymes are specific biological catalysts that cannot be poisoned
• D. Enzymes are specific biological catalysts that possess well defined active sites.

Answer 1

Answer: (D)

Normal optimum temperature of enzymes is between $ 25{}^\circ C $ to $ 40{}^\circ C $ hence (a) is false. Similarly (b) and (c) are also false. Enzymes have well defined active sites and their actions are specific in nature.