Question

Which statement about the enzymes is not correct?
(A) Enzymes are colloidal state
(B) Enzyme are catalysts
(C) Enzymes can catalyse any reaction
(D) Urease is an enzyme.

Answer 1

Hint: Enzymes are biological molecules which act on a catalyst for the biological reaction. Enzymes catalyst the reaction through lock and key can ISM and follow heterogeneous catalysis steps.

Complete step by step answer:
As we know that enzymes are complex proteins with a three dimensional structure and have a high molecular mass. Enzymes are biological molecules that act as catalysts for the reaction occurring within the cells of the body. The enzymes catalyze biological reactions by look and key mechanism. These present a number of cavities of characteristic shape and possess active functional groups on the surface of enzymes. The reactant molecules which have complementary shapes bind themselves to the active centers just as a key fits into a lock to form an enzyme substrate (reactant) complex which then decomposes to form enzymes and the product. The mechanism is shown below:
Step (i): binding enzymes to substrate (reactant) to form an activated complex.
\[{E_{\left( {Enzyme} \right)}} + {S_{\left( {Substrate} \right)}} \to {[ES]_{\left( {Enzyme - Substrate{\text{ }}complex} \right)}}\]
Step (ii):conversion of enzyme substrate complex to enzyme product complex
$ES \to EP$
Step (iii):decomposition of the complex to form products
\[{[EP]_{\left( {Enzyme - {\text{Product complex}}} \right)}} \to {E_{\left( {Enzyme{\text{ Regenerated}}} \right)}} + {P_{\left( {{\text{Product}}} \right)}}\]
 (Lock and key mechanism)
Enzymes catalysts are the most efficient catalyst as they increase the rate of reactions by ${10^8}$ to ${10^{20}}$. Enzymes are highly specific in action; that is one enzyme cannot catalyze more than one reaction. The activity of enzymes is reduced by certain substances called inhibitors or poison. The substance which increases the activity of enzymes is called activator. Enzymes are present in colloidal states. Enzymes are widely used for the manufacture of various useful products. Enzymes like invertase, zymase and maltase are used in manufacture of alcoholic drinks. Enzymes like urease are used to catalyse the hydrolysis of urea. Enzymes renin is used for the manufacture of cheese. Enzymes pepsin is used to soften top meats. Certain enzymes are also useful for treating heart diseases.
Hence we go to know enzymes are in Colloidal state and are used as catalysts. Moreover urease is an enzyme. Hence option (A), (B)and (D) are correct about enzymes.

So, the correct answer is Option C.

Note: Enzymes are only used to catalyse the reactions associated with an organism's body and one enzyme cannot catalyse more than one reaction due to their high specific nature.