NEET2026BiologyChapterActual
Observe the given graph showing the concept of activation energy for a chemical reaction. Which of the following options correctly identifies the labels A, B, and C?
Options
- AA - Transition state; B - Exothermic energy; C - Endothermic energy
- BA - Transition state; B - Activation energy with enzyme; C - Activation energy without enzyme
- CA - Transition state; B - Activation energy without enzyme; C - Activation energy with enzyme
- DA - Substrate state; B - Activation energy without enzyme; C - Activation energy with enzyme
Correct answer
C. A - Transition state; B - Activation energy without enzyme; C - Activation energy with enzyme
Step-by-step solution
The given graph illustrates the concept of activation energy for a chemical reaction, comparing the energy profiles of an uncatalyzed and a catalyzed reaction. Label A points to the peak of the energy profile, which represents the transition state where the substrate is in the process of being converted into the product. Label B represents the activation energy required for the reaction to proceed without an enzyme. It is the energy difference between the substrate and the transition state of the uncatalyzed reacti