Question

Identify the correct statement regarding enzymes.

(a) Enzymes are specific biological catalysts that can normally function at very high temperatures (T-1000 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

Correct Option (d) Enzymes are specific biological catalysts that possess well defined active sites

Explanation:

Normal optimum temperature of enzymes is between 25°C to 40°C. Hence (a) is false. Enzymes are normally homogeneous catalysts that can be poisoned.

Thus, (b) and (c) are also false. Enzymes have well defined active sites and their actions are specific in nature.