Enzymology - Part I

7 Questions

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Biochemistry Quizzes & Trivia

Test your knowledge and understanding ! May be Little tough to answer. . . . .


Questions and Answers
  • 1. 
    • A. 

      All of the enzymes are occupied by substrates

    • B. 

      All of the enzymes have been denatured

    • C. 

      Both are correct

    • D. 

      None are correct

  • 2. 
    Select the Serine protease(s)
    • A. 

      Chymotrypsin

    • B. 

      Trypsin

    • C. 

      Elastase

    • D. 

      Thrombin

    • E. 

      All of the above

  • 3. 
    Select the mismatched pair regarding enzymes and co-factor
    • A. 

      Manganese - isocitrate dehydrogenase

    • B. 

      Copper - cytochrome oxidase

    • C. 

      Zinc - Carbonic anhydrase

    • D. 

      Cobalt - vitamin B12

    • E. 

      Selenium - glutathione peroxidase

    • F. 

      Molybdenum - xanthine oxidase

    • G. 

      All are correctly matched.

  • 4. 
    Which is an enzyme with low specificity ?
    • A. 

      Glucokinase

    • B. 

      Tyrosinase

    • C. 

      Hexokinase

    • D. 

      None of the above

  • 5. 
    • A. 

      Km = concentration of substrate at ½ Vmax

    • B. 

      Km is inversely proportional to the affinity

    • C. 

      Km is increased in non-competitive inhibition.

    • D. 

      Km is increased in competitive inhibition.

  • 6. 
    • A. 

      1/Vo is plotted against 1/[S]

    • B. 

      1/[S] is plotted against 1/Vo

    • C. 

      Km and Vmax can be found.

    • D. 

      Mechanism of action of enzyme inhibitors can be found

  • 7. 
    Chemical nature of enzyme
    • A. 

      Proteins

    • B. 

      RNA

    • C. 

      Both

    • D. 

      None