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A catalyst is a substance that speeds up the rate of a chemical reaction. Catalysts work by lowering a reaction's activation energy.

A substrate is a reactant of an enzyme-catalyzed reaction.

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14y ago
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12y ago

A catalyst is a substance that speeds up the rate of a chemical reaction. Catalysts work by lowering a reaction's activation energy. A substrate is a reactant of an enzyme- catalyzed reaction. The substrates are often compared to a lock and key.

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Q: Describe the roles of a catalyst and substrate in a chemical reaction?
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What is the substance that a catalyst works on?

The substrate on which a catalyst works is called its substrate


Are substrate and catalyse the same thing?

No! A substrate is a reagent in a chemical reaction. Catalyse is the verb form of catalyst; a catalyst is a chemical species that participates in lowering the energy barrier of a chemical reaction and allow a reaction to occur more rapidly. A catalyst is not consumed in a reaction and therefore only a small amount of catalyst is required in any reaction (if required at all), whereas a substrate must be present in the proper stoichiometric amount to allow a reaction to proceed as it is consumed.


What do you call a substance that accelerates the rate of a chemica reaction?

A substance that accelerates the rate of a chemical reaction is called a catalyst.


What is the difference between a reactant and a catalyst?

A reactant is consumed in a reaction to make products. A catalyst is not consumed during the reaction. It is either not directly involved in the reaction or regenerated upon the end of the reaction. This is the main difference. In addition, catalysts work by decreasing the activation energy for the reaction, allowing the reactants to react more easily.


What effect does a catalyst have?

a catalyst has no effect in chemical reaction. it only increases or decreases the rate of the chemical reaction.


Why a catalyst is not involved chemically in chemical reaction?

The catalyst is not a reactant; a catalyst only favors a chemical reaction, the reaction rate and yield.


What is an enzyme complex substrate?

An enzyme-substrate complex uses the reactants(substrates) and the enzyme. The enzyme is like a catalyst that reduces the required activation energy and speeds up the chemical reaction.


What term describe a substance that lowers the amount of energy needed to start a chemical reaction?

Catalyst


Are substrate and reactant the same or different?

Actually a substrate is a reactant. It undergoes a chemical reaction to yield a product. The difference is that a catalyst acts upon it to increment the rate of the reaction (by reducing the activation energy required).


Is catalyst a product of chemical reaction?

No a catalyst is unchanged by a chemical reaction, it does however serve to speed up the rate of the reaction.


Which component is affected when a catalyst is added to a chemical reaction?

The component affected when a catalyst is added to a chemical reaction is the reactants. The purpose of a catalyst is to speed up a reaction.


What does a catalyst reduce to a chemical reaction?

Adding a catalyst a chemical reaction can occur with a lower activation energy.