Enzyme Reaction
An exergonic reaction is one that

requires energy to proceed
gives off much heat
releases energy for work
looses energy

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Enzyme Reaction
Hydrogen and oxygen release enormous amounts of energy when they react. Yet, hydrogen and oxygen can be mixed together in a balloon and nothing will happen. Why?

Competitive inhibitors are blocking the reaction from occurring in the active site
All of these
The energy of activation to form the transition-state complex is too high to allow the reaction to occur without assistance
There must be contaminating elements in the balloon that prohibit the reaction from occurring

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