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Explain enzymes

Explain enzymes in brief? What is the significance of enzymes for the living beings?

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Enzymes are proteins which are catalysts of chemical reactions. From Chemistry it is recognized that catalysts are non-consumable substances which decrease the activation energy essential for a chemical reaction to take place.

Enzymes are extremely specific to the reactions they catalyze. They are of much significance for life since most chemical reactions of the tissues and cells are catalyzed by enzymes. Without enzymatic action such reactions would not take place or would not happen in the needed speed for the biological processes in which they contribute.

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