LABORATORY REVIEW
ENZYME CATALYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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right before the energy barrier is overcome.
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when it is ready to receive energy.
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after releasing free energy.
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when there is an input of energy to initiate the reaction.
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only when enzymes are used.
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Detailed explanation-1: -Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA). Activation energy is the amount of energy required to reach the transition state. The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.
Detailed explanation-2: -What happens when the transition state is reached?-The chemical reaction can readily proceed.-Bonds are stretched to their limit in the reactant molecules.
Detailed explanation-3: -Transition state (TS, [TS]++): The highest energy structure along the reaction coordinate between reactants and products for every step of a reaction mechanism.
Detailed explanation-4: -The energy needed to start a chemical reaction is called activation energy.
Detailed explanation-5: -All reactions require an initial input of energy to proceed, called the activation energy.