Identify the correct statement regarding enzymes.

Options

A. Enzymes are specific biological catalysts that can normally function at very high temperature (T -1000 K)
B. Enzymes are specific biological catalysts that they posses well-defined active sites
C. Enzymes are specific biological catalysts that can not be poisoned
D. Enzymes are normally heterogeneous catalysts that are very specific in their action

Explanation

Enzymes are very specific biological catalysts possessing well defined active sites.