Question

Which of the following is/are incorrect for enzyme?

• A. Enzymes only catalyse the reaction but they are not involved in the reaction.
• B. All enzymes are proteins.
• C. Enzymes lower the activation energy.
• D. Temperature and pH affect the activity of enzymes.

Answer 1

The correct option is B All enzymes are proteins.

Enzymes only catalyse the reaction but they are not involved in the reaction. They lower the activation energy and carry out the reaction. Both temperature and pH affect the activity of an enzyme. Almost all enzymes are proteins but there are also some nucleic acids called ribozymes which are not protein enzymes.