Enzymes – Online MCQs Test – Biology 9th

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

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

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

4. This enzyme acts on lipids only.

5. Enzyme are:

6. Enzymes are biocatalyst, made up of mostly:

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

8. Enzymes have specific shape with three dimensionally folded chains of:

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

10. Select the mismatched:

11. These are the enzymes which catalyzes the proteins.

12. Most enzymes work at neutral pH:

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

14. It works at a low pH i.e. it is highly acidic.

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

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

17. Active site continuously changes it shapes until the substrate do not bind to it, is statement of:

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

19. The minimum amount of energy, a reaction requires to initiate, is called:

20. The metabolic activities are always of: