Of the following statements about enzymes which ones are true (i) Enzymes lack in nucleophilic groups (ii) Enzymes are highly specific both in binding chiral substrates and in catalyzing their zeactions (iii) Enzymes catalyse chemical reactions by lowering the activation energy (iv) Pepsin is a proteolytic enzyme [CBSE PMT 1995]

Of the following statements about enzymes which ones are true (i) �

1.	Of the following statements about enzymes which ones are true (i) Enzymes lack in nucleophilic groups (ii) Enzymes are highly specific both in binding chiral substrates and in catalyzing their zeactions (iii) Enzymes catalyse chemical reactions by lowering the activation energy (iv) Pepsin is a proteolytic enzyme [CBSE PMT 1995]
A.	(i) and (iv)
B.	(i) and (iii)
C.	(ii), (iii) and (iv)
D.	(i)
Answer» D. (i)

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