Enzymes – Online MCQs Test – Biology 9th

1. These are the enzymes which catalyzes the proteins.

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

3. Enzyme are:

4. Activity of enzymes can be enhanced by:

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

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

7. All are factors affecting enzymes activity except:

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

9. Rate of reaction will increase when temperature:

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

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

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

13. Enzymes are biocatalyst, made up of mostly:

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

15. Enzymes activity occurs within a:

16. Most enzymes work at neutral pH:

17. The metabolic activities are always of:

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

19. Enzymes are sensitive to a minor change in:

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