Enzymes – Online MCQs Test – Biology 9th

1. In 1958, the induced fit model suggested by:

2. The point where the enzyme is most active is known as:

3. This enzyme acts on lipids only.

4. The biocatalysts which facilitate chemical reaction by lowering activation energy is called:

5. Metabolic reactions are:
(i)Constructive reactions
(ii)Destructive reactions
(iii)inhibiting reactions

6. The phenomenon of chemical activity in an organism is called:

7. It works at a high pH i.e. it is basic.

8. In the human body, the number of known enzymes is more than:

9. The protein nature of the enzymes makes them extremely sensitive to:

10. In destructive reactions large molecules breakdown in small molecules to produce energy is called:

11. The point where the enzyme is most active is known as:

12. Rate of reaction will increase when temperature:

13. Enzymes are biocatalyst, made up of mostly:

14. In 1894, the lock and key model theory was first postulated by:

15. Enzyme are:

16. By inhibitor, the activity of enzymes can be:

17. Chemical reaction requires particular conditions to carry down at proper rate, especially:

18. Enzymes are sensitive to a minor change in:

19. All enzymes work at their maximum rate at:

20. These are the enzymes which catalyzes the proteins.