Enzymes – Online MCQs Test – Biology 9th

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

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

3. Select the mismatched:

4. Enzymes are sensitive to a minor change in:

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

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

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

8. These are the enzymes which catalyzes the proteins.

9. This enzyme acts on lipids only.

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

11. Reactants of enzyme are called:

12. Activity of enzymes can be enhanced by:

13. Rate of reaction will increase when temperature:

14. All are characters of enzymes except:

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

16. All are factors affecting enzymes activity except:

17. Enzyme are:

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

19. All enzymes work at their maximum rate at:

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