Enzymology Multiple Choice Questions with Answers – Biochemistry Quiz

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Solved MCQs- Enzymology Multiple Choice Questions with Answers – Biochemistry Quiz – Enzymology Quiz

1. Who is the father of enzymology?
a. Anton von Leeuwenhoek
b. Edward Howell
c. JB Sumner
d. John Northrop
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2. Which of the following statement/s is/are correct?
a. The enzyme is a biocatalyst
b. Enzyme increases the rate of reaction
c. Enzyme decreases the activation energy of the reaction
d. All the above
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3. Nature of the enzyme is_______.
a. Protein
b. Lipid
c. Carbohydrate
d. None
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4. An enzyme was crystallized for the first time by_________.
a. John Northrop
b. Edward Buchner
c. J.B. Sumner
d. None
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5. Which of the following is correct?
a. Apoenzyme + Cofactor = Holoenzyme
b. Apoenzyme – Cofactor = Holoenzyme
c. Apoenzyme =Cofactor – Holoenzyme
d. None
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6. Enzymes are classified into ________ types.
a. Two
b. Three
c. Five
d. Six
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7. Competitive inhibitor of an enzyme is__________.
a. Structural analogue of enzyme
b. Functional analogue of enzyme
c. Functional analogue of substrate
d. Structural analogue of substrate
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8. Majority of the enzymes are inactive at
a. At 25ºC
b. At 15ºC
c. Between 30-40ºC
d. Above 70ºC
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9. Induced fit theory for the formation of Enzyme-Substrate complex was proposed by______.
a. Koshland
b. Charles Leibeg
c. Buchner
d. Fischer
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10. SI Unit for enzyme activity is
a. Bel
b. mho
c. Hertz
d. Katal
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11. Which of the following is the reason for Gout disease?
a. Deficiency of Xanthine Oxidase enzyme
b. Overproduction of Xanthine Oxidase
c. Deficiency of ß-galactosidase enzyme
d. Deficiency of Lipase enzyme
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12. Which of these enzymes is related to molecular biology?
a. DNA Ligase
b. DNA topoisomerase
c. Polymerase
d. All the above
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13. Deficiency of the enzyme ß-glucocerebrosidase results in___________.
a. Gaucher’s Disease
b. Faber’s disease
c. Krabbe’s disease
d. Lesh-Nyhan Syndrome
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14. The enzyme that differs in amino acid sequence but catalyzes the same reaction are_________.
a. Co-factors
b. co-enzymes
c. Apoenzymes
d. Isoenzymes
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15. The temperature at which the maximum activity of the enzyme occurs is_________.
a. Optimum temperature
b. Maximum Temperature
c. Minimum Temperature
d. None
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16. The class of enzymes that catalyzes synthetic reactions where two molecules are joined together and ATP is used is___________.
a. Hydrolases
b. Lyases
c. Ligases
d. Isomerases
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17. The non-protein organic part of the enzyme is__________.
a. Co-factor
b. Co-enzyme
c. Apoenzyme
d. Isoenzyme
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18. Pepsin and urease are examples for which class of enzymes?
a. Hydrolases
b. Ligases
c. Oxidoreductases
d. Lyases
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19. Which of the following enzymes is elevated in alcoholism
a. Hepatitis
b. Serum Glutamate Pyruvate Trasmittase
c. Acid Phosphatase
d. glutamyl transpeptidase
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