Enzymes – Online MCQs Test – Biology 9th

1. Reactants of enzyme are called:

2. All are characters of enzymes except:

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

4. These are the enzymes which catalyzes the proteins.

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

6. All enzymes work at their maximum rate at:

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

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

9. Activity of enzymes can be enhanced by:

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

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

12. The metabolic activities are always of:

13. Reactions of an organism are collectively called:

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

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

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

17. Enzymes are sensitive to a minor change in:

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

19. Select the mismatched:

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