Enzymes Questions Set 1

1. A sigmoidal plot of substrate concentration ([S]) verses reaction velocity (V) may
indicate

2. From arachidonate, synthesis of prostaglandins is catalysed by

3. Krabbe’s disease is due to the deficiency
of the enzyme:

4. Farber’s disease is due to the deficiency
of the enzyme:

5. The enzyme which can add water to a carbon-carbon double bond or remove
water to create a double bond without breaking the bond is

6. An example of ligases is

7. Example of an extracellular enzyme is

8. From the L ineweaver-Burk p lot of Michaelis-Menten equation, Km and Vmax can be determined

when V is the reaction velocity at substrate concentration S,the X-axis experimental data are expressed as

9. In reversible non-competitive enzyme
activity inhibition

10. A synthetic nucleotide analogue, used in organ transplantation as a suppressor of
immunologic rejection of grafts is

11. The compound which has the lowest density is

12. Neimann-Pick disease is due to the deficiency of the enzyme:

13. An example of lyases is

14. Enzymes, which are produced in inactive
form in the living cells, are called

15. Activation or inactivation of certain key regulatory enzymes is accomplished by
covalent modification of the amino acid:

16. The Km of the enzyme giving the kinetic
data as below is

17. The kinetic effect of purely competitive
inhibitor of an enzyme

18. In reversible non-competitive enzyme
activity inhibition

19. Gaucher’s disease is due to the deficiency
of the enzyme:

20. A demonstrable inducer is absent in

21. An inducer is absent in the type of enzyme:

22. Fabry’s disease is due to the deficiency of
the enzyme:

23. Fischer’s ‘lock and key’ model of the enzyme action implies that

24. A Holoenzyme is

25. Non steroidal anti inflammatory drugs, such as aspirin act by inhibiting the
activity of the enzyme: