1. The word "enzyme" is derived from Greek meaning:

2. The catalytic activity of an enzyme occurs at the:

3. Scientists who discovered catalytic RNA molecules were:

4. RNA molecules that function as enzymes are called:

5. Almost all enzymes are chemically:

6. The term enzyme was suggested in 1878 by:

7. An activated enzyme consisting of protein and cofactor is:

8. Non protein part permanently attached to enzyme is:

9. Enzyme without its cofactor is called:

10. A detachable inorganic cofactor is called:

11. Organic molecules assisting enzymes are:

12. Protein part of enzyme is:

13. The lock and key model was proposed by:

14. The induced fit model was proposed by:

15. Lock and key hypothesis explains:

16. Enzymes increase reaction rate by:

17. The molecule on which enzyme acts is:

18. The result of enzyme reaction is called:

19. After reaction enzymes remain:

20. Enzyme activity is affected by:

21. Optimum temperature for most human enzymes is:

22. At 0°C most enzymes are:

23. Optimum pH for pepsin is:

24. Magnesium ion acts as activator for:

25. Zinc ion acts as activator for:

26. Substances that decrease enzyme activity are called:

27. Competitive inhibitors bind to:

28. Non competitive inhibitors bind to:

29. Binding site away from active site is called:

30. When final product inhibits first enzyme the process is:

31. Feedback inhibition helps to:

32. Pesticides like DDT affect enzymes in:

33. Antibiotic blocking bacterial cell wall enzyme is:

34. Enzymes act as:

35. Loss of enzyme structure due to heat is called:

36. Organic cofactors are derived from:

37. Holoenzyme consists of:

38. Apoenzyme becomes active after binding:

39. Pepsin functions in:

40. Enzymes are produced by:

41. Enzyme substrate complex forms during:

42. Enzymes function best at:

43. Increasing substrate concentration usually:

44. Non competitive inhibition changes:

45. The study of enzymes is called:

46. Enzymes are mostly:

47. Enzymes are highly:

48. Enzymes speed biochemical reactions in:

49. Metal ions acting as cofactors include:

50. Inactive precursor of enzyme is called:

51. The biocatalysts which increase the chemical reaction are called:

52. Enzymes increase chemical reactions by lowering the:

53. Mostly enzymes are composed of:

54. The term "enzyme" was proposed by:

55. Molecules of nucleic acid act as:

56. The site of an enzyme where substrate attaches is called:

57. Lock-and-key theory about enzyme action was proposed by:

58. The inactive site of an enzyme is called:

59. Induced fit model theory about enzyme action was proposed by:

60. The enzymes which consist of only proteins are called:

61. The enzymes which are composed of proteins and other groups are called:

62. The protein part of an enzyme is called:

63. The non-protein part of an enzyme is called:

64. The complete enzyme with protein and non-protein parts is called:

65. The enzymes which help in oxidation and reduction reactions are called:

66. The enzymes which catalyze the transfer of a group from one substrate to another are called:

67. The enzymes which help in the breakdown of compounds are called:

68. The enzymes involved in conversion of compounds into other compounds with similar formula but different structures are called:

69. The enzymes which catalyze the removal or addition of one group from or to a double bond are called:

70. The enzymes which help in the combination of two molecules using energy are called:

71. When the prosthetic group is of inorganic type, it is called:

72. NAD, NADP, FMN, and ATP are considered as:

73. The inorganic substances which increase the activity of enzymes are called:

74. The substances which decrease the activity of enzymes are called:

75. The inhibitors which resemble the substrate and attach to the active site of enzymes are called:

76. The inhibitors which attach to the allosteric site of enzymes are called:

77. The pH of Pepsin enzyme is:

78. The pH of Trypsin enzyme is:

79. When the product binds with the enzyme’s active site, the process is called:

80. Radiation may affect enzymes and lead to: