Enzymes – Online MCQs Test – Biology 9th

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

2. Enzyme are:

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

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

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

6. This enzyme acts on lipids only.

7. Enzymes activity occurs within a:

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

9. All are characters of enzymes except:

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

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

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

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

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

15. Enzymes are biocatalyst, made up of mostly:

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

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

18. Reactions of an organism are collectively called:

19. Activity of enzymes can be enhanced by:

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