A simple mechanism for enzyme-catalyzed reaction is given by the folllwoing set of equations

`{:(underset("(enzyme)")(E),+,underset("(reactant)")(S),hArr,underset("(intermediata 1)")(ES),,),(underset("(intermediate 1)")(ES),,,hArr,underset("(intermediate 2)")(EP),,),(underset("(intermediate 2)")(EP),,,hArr,underset("(enzyme)")(E),+,underset("(product)")(P)):}`
This is know as the Michaelis-Menten mechanism. The potential energy diagram is shown in the fig. Which of the following sets of identifications is correct ? (Assume that the temperature and pressure are constant).

Options

A. `(1)=E+P., (2)=EP, (3)=ES, (4)=E+S`
B. `(1) ES," " (2)underset("complex")("Activated")," " (3)EP, " "(4)underset("complex")("Activated")`
C. `(1)EP " "(2)underset("complex")("Activated")," " (3)ES, " (4)"underset("complex")("Activated")`
D. `(1) E+S" "(2) ES" "(3) EP " "(4)E+P`

Answer

D

Explanation

Intermediate and product have less potential energy than activated complex.