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Question
Identify the correct statement regarding enzymes.
Options:
A .  Enzymes are specific biological catalysts that cannot be poisoned
B .  Enzymes are normally heterogeneous catalysts that are very specific in their action
C .  Enzymes are specific biological catalysts that can normally function at very high temperature (T ~ 1000K)
D .  Enzymes are specific biological catalysts that possess no well-defined active sites.
Answer: Option A
:
A
Option (a)
Enzymes are specific biological catalysts that cannot be poisoned.
They are not necessarily heterogeneous catalysts: those in solution in the cellular medium are homogeneous, those bound to a membrane are heterogeneous.
We have seen they perform best at the temeperature close to our normal body temperature around 310 K. At very high temperatures, they become denatured.

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