Question

Which of the following is not true for the specificity of enzyme action?

(a) Specificity refers to discrimination of an enzyme between two competing substrates

(b) Specificity of enzymes lies both the reaction they catalyze and the substrates on which they act

(c) Specificity makes it possible for a number of enzymes to coexist in the cell without interfering in each other reaction

(d) Five types of specificities have been recognized in enzymes

I have been asked this question in final exam.

The query is from Specificity of Enzyme Action in portion Enzymes of Enzyme Technology

Answer 1

Right choice is (d) Five types of specificities have been recognized in enzymes

To explain I would say: Following statements are true for specificity of enzyme action:

• Discrimination of an enzyme between two competing substrates.

• Enzymes specificity lies in both the reaction they catalyze and the substrates on which they act.

• Because of specificity, it is possible for a number of enzymes to coexist in the cell without interfering in each other reaction.

Not five, but three types of spec specificities have been recognized in enzymes.