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Answered 2010-03-24 15:06:49

A biological catalyst increases the rate of biological processes/biological reactions.

A biological catalyst (enzymes) act to lower the activation energy of a chemical reaction.

Enzymes are bilogical catalysts that bind or separate substrates (chemicals the catalysts act on). the 'lock and key' model suggests that the enzyme doesn't change its form and only similarly shaped substrates can fit into the lock or cleft. it is similar to the toy children play with where you must fit the circular block into the circular hole and so on. The 'induced fit' model says thatthe enzyme molds itself around the substrate and separates or binds it from there. hope i helped!

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A catalyst is a substance which alters the rate of a chemical reaction but is chemically unchanged at the end of the reaction. basically it increases or decreases the speed of a chemical or biological reaction, but it does not get itself involved in the reaction. hoped this helped (:


An enzyme is basically a biological catalyst and will speed up a reaction


A catalyst improve the yield of a chemical reaction and the reaction rate.


Enzymes are biological catalysts. This means they speed up a chemical reaction, but are not broken down or changed by it. They lower the amount of energy required for a chemical reaction to tack place.


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


A catalyst can stop or speed a chemical reaction.


A catalyst speeds up the rate of a chemical reaction.


That would be an enzyme. Also know as a biological Catalyst



catalyst decreases the activation energy of a chemical reaction, thereby increasing the rate of the chemical reaction


A catalyst decreases the activation energy of a chemical reaction.


No, generally a catalyst is conserved when used in a chemical reaction. This is because the catalyst is not directly involved in the reaction, that is, it does not undergo chemical change.


A catalyst is a substance that affects the speed of a chemical reaction, but is itself unchanged at the end of the reaction. An example of this is the enzyme, where it is a biological catalyst that speeds up a reaction but does not take part in it, and is unchanged at the end of the reaction. A literal example would be a spade, where the spade is the "catalyst" digging into the ground. after the "reaction", the spade is remains unchanged.


The catalyst remain unchanged after the chemical reaction.


they speed up a reaction


A catalyst is something which speed up a chemical reaction without inself being used upin the reaction


A catalyst improve the rate of a chemical reaction.


This is called a catalyst. In biology, it is referred to as an enzyme (biological catalyst). Catalysts can also be used to speed up or slow down chemical reactions.


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


The catalyst is not a reactant in a chemical reaction but contribute to the success of this reaction.


Substances that speed up the rate of reaction are called catalysts. Catalysts participate in chemical reaction but does not get consumed. Yeast is an example of biological catalyst.


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


a catalyst either decrease or increase the rate of a chemical reaction



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