JEE MAIN - Chemistry (2021 - 20th July Evening Shift - No. 9)
Which one of the following statements is not true about enzymes?
Enzymes are non-specific for a reaction and substrate.
Almost all enzymes are proteins.
Enzymes work as catalysts by lowering the activation energy of a biochemical reaction.
The action of enzymes is temperature and pH specific.
Explanation
Enzymes are mostly proteins. They function as catalysts in biochemical reactions by lowering the energy of activation. They are highly specific w.r.t. temperature and pH in their action.
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