Enzymes are proteins produced by the living cells, which are capable of catalyzing a chemical reaction in a living organism to yield specific product, without getting used up.
• They never initiate any reaction rather only accelerates the pre-cxisting reaction.
• Enzymes are biological catalysts.
Catalyst
These are the agents, which in minute amounts increase the velocity of a reaction without appearing in the final product of the reaction.
Substrate
The compound on which an enzyme acts is called its substrate.
Nomenclature
Names of enzymes usually end in "ase" which is preceded by the name of its substrate.
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