The standard free energy change and standard activation energy for four biochemical reactions are listed in the table below. Reaction Standard free energy change (kcal/mol) Standard activation energy (kcal/mol) P -40 18 Q -71 18 R -40 11 S -71 11 A few interpretations are given below. Among these, the most appropriate interpretation is

Question

The standard free energy change and standard activation energy for four biochemical reactions are listed in the table below. Reaction Standard free energy change (kcal/mol) Standard activation energy (kcal/mol) P -40 18 Q -71 18 R -40 11 S -71 11 A few interpretations are given below. Among these, the most appropriate interpretation is (A) P, Q, R and S represent the same reaction carried out in the presence of enzyme, high temperature, absence of enzyme and low temperature, respectively. (B) Q and S represent the same reaction carried out at high and low temperatures, respectively (C) R and S represent the same reaction carried out in the presence and absence of catalyst, respectively (D) P and R represent the same reaction carried out in the absence and presence of enzyme, respectively

Tardigrade Admin · Accepted Answer

Standard free energy represents the energy available to do work at standard temperature. Activation energy represents the energy required to start a reaction. The enzyme works by lowering down the activation energy.