Which of the following describes the given graph

Which of the following describes the given graph
  1. Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme
  2. Exothermic reaction with energy A in presence of enzyme and B in the absence of enzyme
  3. Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme
  4. Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme

Solution

The potential energy of the substrate is more than the product. So it is an exothermic reaction. 'A' represents the activation energy in the presence of enzyme while 'B' in the absence of enzyme i.e., enzyme lowers down the activation energy.

Asked in: NEET 2016 (Phase 2)

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