Enzymatic Conversions

The activation energy for given reaction is (i.e., reactant $\to$ product)

${\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}\to {\mathrm{H}}_2{\mathrm{CO}}_3$
Carbonic acid
Which one of the following statements is incorrect about the above reaction?

The minimum amount of energy required by the reactants to initiate the reaction is called:

In an enzyme catalysed reaction, the energy of activation of reactant is increased.

An enzyme catalyses a reaction by _________ activation energy of the reaction.

In a reaction, the threshold energy is equal to:

Consider the following energy profile:






Which of the following reactant is most suited for the above energy profile:

All the following are correct about enzymes, except:

The activation energy for a simple chemical reaction $A\to B$is$\mathrm{ }{E}_a$ in forward direction. The activation energy for the reverse reaction is