Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBiomolecules5 Marks
Question
Describe the important properties of enzymes.
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Answer
The important properties of enzymes are as follows:
The enzymes are generally proteins which are high molecular weight complex globular proteins. They can associate with non-protein substance for their activity.
The enzymes do not start a chemical reaction but only accelerate it. They combine temporarily with the substrate molecules and are not consumed or changed permanently in the reaction which they catalyse.
The enzyme controlled reactions are reversible.
The enzymes are specific in action. An enzyme catalyses only a particular kind of reaction or acts on a particular substrate only.
The enzymes are thermo labile i.e., heat sensitive and can function best at an optimum temperature. Similarly, enzymes show maximum activity at optimum pH.
The enzymes are inactivated by poisons and radiation.
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