Enzymes – Online MCQs Test – Biology 9th

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

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

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

4. This enzyme acts on lipids only.

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

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

7. Select the mismatched:

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

9. If the amount of the enzyme is kept constant and the substrate concentration is then gradually increased, the reaction velocity will:

10. Reactants of enzyme are called:

11. Enzymes activity occurs within a:

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

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

14. Activity of enzymes can be enhanced by:

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

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

17. Enzymes are biocatalyst, made up of mostly:

18. All are factors affecting enzymes activity except:

19. Rate of reaction will increase when temperature:

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