Answer:
Both endergonic and exergonic reactions
Step-by-step explanation:
Transition state is a particular configuration in a chemical reaction that corresponds with highest potential energy along a reaction coordinate.
When a chemical reaction takes place, energy is either released to the surrounding or absorbed from the surrounding.
In reactions where energy is released, the reaction is said to be exergonic and the bonds formed are stronger than the bonds being broken.
Endergonic reactions absorbs energy from the surrounding and forms weaker new bonds compared to the bonds being broken
Both reaction have a transition state.