Enzymes – Online MCQs Test – Biology 9th

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

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

3. These are the enzymes which catalyzes the proteins.

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

5. A small portion of enzyme where substrate attaches with enzyme is called:

6. Activity of enzymes can be enhanced by:

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

8. All are characters of enzymes except:

9. In constructive reactions, large molecules are formed to form a structure of cell or body. These reaction are called:

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

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

12. Rate of reaction will increase when temperature:

13. Enzymes are biocatalyst, made up of mostly:

14. Reactants of enzyme are called:

15. All are factors affecting enzymes activity except:

16. Enzymes activity occurs within a:

17. Select the mismatched:

18. Enzyme are:

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

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