Pg Blazer - Online Test Series 5 - Biochemistry

10 Questions

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Pg Blazer - Online Test Series 5 - Biochemistry

MCQ's in biochemistry. For more practice tests, go to PG Blazer Online Test Series


Questions and Answers
  • 1. 
    CAP in Lac operon is an example of:
    • A. 

      Positive regulator

    • B. 

      Negative regulator

    • C. 

      Constitutive expression

    • D. 

      Attenuation

  • 2. 
    Protein purification and separation can be done by all except?
    • A. 

      Chromatography

    • B. 

      Centrifugation

    • C. 

      Electrophoresis

    • D. 

      Densitometry

  • 3. 
    All of the following are true regarding oxygenases except :
    • A. 

      Incorporate 2 atoms of oxygen

    • B. 

      Incorporate 1 atom of oxygen

    • C. 

      Required for hydroxylation of steroids

    • D. 

      Required for carboxylation of drugs

  • 4. 
    Treatment of Multiple Carboxylase Deficiency is:
    • A. 

      Biotin

    • B. 

      Pyridoxine

    • C. 

      Thiamine

    • D. 

      Folic acid

  • 5. 
    Basement membrane degeneration is mediated by?
    • A. 

      Metalloproteinases

    • B. 

      Oxidases

    • C. 

      Elastases

    • D. 

      Hydroxylases

  • 6. 
    Which of the following enzymes is stable at acidic pH?
    • A. 

      Pepsin

    • B. 

      Trypsin

    • C. 

      Chymotrypsin

    • D. 

      Carboxypeptidase

  • 7. 
    Regarding proteoglycans, false is:
    • A. 

      Chondroitin sulfate is a Proteoglycan

    • B. 

      They hold less amount of water

    • C. 

      They are made up of sugar and aminoacids

    • D. 

      They carry charge

  • 8. 
    Study of multiplication of proteins in disease process is called:
    • A. 

      Proteomics

    • B. 

      Genomics

    • C. 

      Glycomics

    • D. 

      Nucleomics

  • 9. 
    Protein that precipitates on heating to 45° C and redissolves on boiling is:
    • A. 

      Bence Jones Protein

    • B. 

      Gamma globulin

    • C. 

      Albumin

    • D. 

      Myosin

  • 10. 
    Northern blot is used for the separation of:
    • A. 

      MRNA

    • B. 

      DNA

    • C. 

      Protein

    • D. 

      Protein DNA interaction