Question

Which one of the following statements is not true about enzymes?

Options

• 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.

Answer 1

Enzymes are non-specific for a reaction and substrate.

Explanation:

Enzymes are mostly proteins. They function as catalysts in biochemical reactions by lowering the energy of activation and are also highly specific w.r.t. temperature and pH.