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Answered 2012-06-14 21:12:30

The presence of catalysts, usually enzymes.

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In a chemical reaction what does an enzyme do?

It lowers the activation energy (Ea) in biological systems. The activation energy is the amount of energy needed to make the reaction spontaneous; make the reaction run. Enzymes (biological catalysts) are essential for biochemical pathways.


How does a catalyst affect the activation energy of a reaction?

A catalist lowers the activation energy of a reaction.


What is a protein that lowers activation energy of reaction?

An enzyme is a globular protein that lowers activation energy of reaction thereby greatly increasing the rate of reaction.




What is activation energy How does a catalyst affect activation energy?

Activation energy is the energy required by a reaction for the reaction to occur. The catalyst lowers the activation energy, making it easier for the reaction to happen.Improvement:A catalyst don't lowers the activation energy. A catalyst creates a alternative route (*) for the same reaction with a lower activation energy.* = as a result of the interaction of the reagents with the catalyst.


When an enzyme catalyzes a reaction?

It lowers the activation energy of the reaction.


Lowers a chemical reactions activation energy?

A catalyst lowers the activation energy without being consumed during a reaction



What does an enzyme do to a reaction's activation energy?

It lowers the activation energy needed to perform the reaction.


How does an enzyme speed up a reaction?

It lowers the activation energy of the reaction.



Does an enzyme lower the activation energy of a reaction?

The definition of enzyme is a macromolecule of protein that lowers the activation energy of a chemical reaction.


How is enzyes function as catalysts?

It lowers the activation energy of a reaction.


How does an enzyme work to catalyze a reaction?

It lowers the energy barrier needed for reactants to achieve the transition state or lowers the energy of activation of a reaction.


How do enzymes affect activation energy and reaction temperature?

enzymes reduce the amount of activation energy required to start a reaction. Lowers the temperature.


What effect does an enzyme have on the activation energy of a chemical reaction?

A catalyst lowers the activation energy of a chemical reaction. Many, but not all, enzymes are catalysts.


What occurs when a catalyst is used in a chemical reaction?

a catalyst lowers the activation energy of a reaction.


Does enzymes lower the activation need for chemical reaction?

It lowers the activation energy for a chemical reaction. So, you do not need so much energy to get a chemical reaction started.


How do enzymes speed up chemical reaction's.?

Enzymes are biocatalysts that speed up the biochemical reactions by lowering the activation energy. It will not be consumed at the end so it can be reused for the next reaction. It binds to thte substrate molecule and aids the biochemical conversion to product without being consumed.


How does an enzyme alte the rate of a chemical reaction?

An enzyme lowers the activation energy of a reaction. This lowers the minimum energy required for the reaction to occur. So, the reaction gets significantly faster.


How does a catalyst affect a chemical reaction?

It either lowers the activation energy or increases the activation energy, allowing the reaction to occur faster or slower respectively. It modifies the rate of the reaction.




A catalyst accelerates a chemical reaction because the?

Because it lowers the activation energy needed to "start" the reaction.


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