Study the figure shown here. What does the letter A depict?

Question

Quizplus · Accepted Answer

The letter A depicts the energy of activation, which is the minimum energy required for a chemical reaction to occur. It is the energy needed to break the chemical bonds in the reactants and initiate the reaction. The energy of the reactants (choice A) and products (choice B) are not shown in this figure, while the substrate concentration (choice D) is not directly related to the energy barrier for a reaction.

Study the Figure Shown Here