XI Biology Enzymes Online Test Mdcat-2024

1. The figure given below shows the conversion from Substrate to Product, Give the label below

2. Human Enzymes are highly active at____ , completely denatured at____ , activity completely minimized at___ and temperature at which Enzymes works maximum is called ?

3. The essential chemical components of many coenzymes are?

4. Feedback inhibition on which most enzymes are controlled is a type of which inhibition?

5. The enzyme named phosphohexose, also used in glycolysis, falls in which enzymatic group?

6. The enzyme group which breaks down and removes groups without hydrolysis is called?

7. The pepsin enzyme works in the range of ______ pH.

8. The part which is non-protein but organic and is detachable is called?

9. The non-protein part of an enzyme is called?

10. Bacteria that survive in hot springs, hence their optimum temperature for enzymatic activity is ___ and used for ___?

11. Most enzymes are active at what delta temperature?

12. At very high substrate concentration, it does ___ effect on enzymatic activity:

13. The optimum pH of amylase is?

14. According to the theory of induced fit model given by Koshland, the active site of the enzyme is?

15. Enzymes' amino acids ionization is caused by?

16. The term "enzyme" was given by ___ in 1878.

17. Which is responsible for the catalytic site of enzymes?

18. Which is found in the porphyrin ring of chlorophyll as a permanent group?

19. The active site of enzymes is/are?

20. Enzymes are ___ in size than substrate?

21. Enzymes are produced in?

22. Enzymes are very much specific in?

23. When the enzyme is saturated with substrates, adding more enzymes will affect the enzymatic activity in what way?

24. Which one of the following statements is correct, with reference to enzymes?

25. A non-proteinaceous enzyme is?

26. What happens to an enzyme after it has reacted with a substrate?

27. Most enzymes are ___ in weight, ___ in structure, and ___ in nature:

28. An enzyme which has a cofactor and a protein polypeptide chain is called activated enzyme is?

29. A series of enzymes catalyze the reaction X → Y → Z → A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme. What is the substance called?

30. Enzyme which is called amylase converts amylose to?

31. The rate of enzyme activity means the quantity of substrate transformed into product in a unit of time which is?

32. Ferredoxin is an example of ___ and is a ___ agent in reactions?

33. DNA and RNA polymerase are examples of?

34. Lock and key model was given by?

35. In the lock and key model, the enzyme is?

36. Pepsinogen is functionless due to ___ and on its ___:

37. Complete the given reaction below:

(Enzyme + substrate → ES complex → ?)

38. The synthetase is another name of an enzyme called?

39. Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?

40. Enzymes are of which structure?

41. Enzymes increase the biological reactions of the body by?

42. The pepsin enzyme is released as an inactive form and is activated by ___?

43. Penicillin is an antibiotic used by humans for decades to fight against infections and is an example of ___ and is an inhibitor of bacteria’s which component?

44. Mg in porphyrin ring is an example of ___ and is ___?

45. Which is the highly specific part of an enzyme as a whole?

46. Inhibition in which an inhibitor mimics the substrate shape to bind with the binding site is?

47. Inhibition which binds to the ES complex is?

48. Inhibition known as anticompetitive inhibition is?

49. Feedback inhibition on which most enzymes are controlled is ___ and control by ___?

50. At very low temperature, enzymes are?