Question

Which of the following statements about enzymes is not true?

a)Enzymes catalyse chemical reactions by lowering the activation energy
b)Enzymes are highly specific, both in binding chiral substrates and in catalysing their reactions
c)Enzymes do not possess nucleophillic groups
d)Pepsin is a proteolytic enzyme

Answer 1

Enzymes are highly specific catalysts that lower the activation energy of chemical reactions. Pepsin is a proteolytic enzyme.

Step-by-step explanation:

Enzymes are highly specific catalysts that lower the activation energy of chemical reactions. They have an active site with a unique chemical environment that fits particular substrates. Pepsin is a proteolytic enzyme, meaning it catalyzes the breakdown of proteins.