Enzymes – Online MCQs Test – Biology 9th

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

2. Select the mismatched:

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

4. Choose the correct statement regarding look and key model.

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

6. Enzyme are:

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

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

9. The metabolic activities are always of:

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

11. Reactions of an organism are collectively called:

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

13. Activity of enzymes can be enhanced by:

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

15. Rate of reaction will increase when temperature:

16. These are the enzymes which catalyzes the proteins.

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

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

19. Its action allows biological reaction to proceed rapidly at relatively low temperature and pressure tolerable by living organism.

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