Which of the following describes the given graph correctly?

Moderate

A

Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme
B

Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme.
C

Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme.
D

Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme.

Solution

In given graph product’s potential energy is less than the substrate so it should be exothermic process. In ‘A’ activation energy is less than the ‘B’ so chemical reaction progression ‘A’ is in presence of enzyme while ‘B’ is in absence of enzyme. If products potential energy is greater than substrate then it is considered as endergonic (endothermal) process.

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