Biochemistry 3

20 Questions

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Biochemistry 3

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Questions and Answers
  • 1. 
    Which Apolipoprotein forms a part of chylomicrons?
    • A. 

      Apo B 48

    • B. 

      Apo B -26

    • C. 

      Apo A 46

    • D. 

      Apo A 48

  • 2. 
    Gene duplication plays an important role in development of?
    • A. 

      RRNA

    • B. 

      MRNA

    • C. 

      MiRNA

    • D. 

      All

  • 3. 
    Histone methylation cause?
    • A. 

      Decreased heterochromatin formation

    • B. 

      Increased euchromatin formation

    • C. 

      Increased transcriptionally active DNA

    • D. 

      None

  • 4. 
    Hoogsteen pairing results in formation of?
    • A. 

      Double helix DNS

    • B. 

      Triplex DNA

    • C. 

      Both

    • D. 

      None

  • 5. 
    Helicase induced unwinding pressure is relieved by?
    • A. 

      DNA Polymerase

    • B. 

      DNA de helicase

    • C. 

      Topoisomerase

    • D. 

      Primase

  • 6. 
    Lactic acidosis related to which vitamin?
    • A. 

      Riboflavin

    • B. 

      Niacin

    • C. 

      Thiamin

    • D. 

      All

  • 7. 
    Accumulation of homogentisic acid pigment is seen in?
    • A. 

      Phenyl ketonurea

    • B. 

      Alkaptonurea

    • C. 

      Both

    • D. 

      None

  • 8. 
    Splicing is a function of?
    • A. 

      Sn RNA

    • B. 

      MRNA

    • C. 

      MiRNA

    • D. 

      T RNA

  • 9. 
    Southern blot detects?
    • A. 

      Protein amounts

    • B. 

      DNA changes

    • C. 

      RNA changes

    • D. 

      All

  • 10. 
    Receptors related to LDL?
    • A. 

      Apo E

    • B. 

      Apo B100

    • C. 

      Both

    • D. 

      None

  • 11. 
    Uv light causes mutation in cells by?
    • A. 

      Formation of pyrimidine dimers

    • B. 

      Chromosomal break

    • C. 

      DNA brakage

    • D. 

      All

  • 12. 
    Urea breath test done in ?
    • A. 

      Liver diseases

    • B. 

      Streptococcus infection

    • C. 

      H Pylori infection

    • D. 

      All

  • 13. 
    Km unchanged ,V max reduced in?
    • A. 

      Competitive inhibitors

    • B. 

      Noncompetitive inhibitors

    • C. 

      Equibrium type

    • D. 

      None

  • 14. 
    Km increased but Vmax unchanged in?
    • A. 

      Competitive inhibitors

    • B. 

      Non competitive inhibitors

    • C. 

      Competitive Equilibrium type

    • D. 

      None

  • 15. 
    Protein - calorie malnutrition is seen in?
    • A. 

      Kwashiorker

    • B. 

      Marasmus

    • C. 

      Rickets

    • D. 

      All

  • 16. 
    Liver glycogen phosphorylase is defective in?
    • A. 

      Mc Ardles disease

    • B. 

      Hers disease

    • C. 

      Pompes disease

    • D. 

      Al

  • 17. 
    Chief regulator of iron homeostasis?
    • A. 

      Globulin

    • B. 

      Hepcidin

    • C. 

      Ferritin

    • D. 

      Transferrin

  • 18. 
    Blue white screening in cloning used for?
    • A. 

      To identify desired chromosomal insert

    • B. 

      To observe mutated segment

    • C. 

      To find out introns

    • D. 

      All

  • 19. 
    Peroxidase enzyme is used in estimating?
    • A. 

      Ammonia

    • B. 

      Creatinine

    • C. 

      Glucose

    • D. 

      All

  • 20. 
    Zinc is a cofactor for?
    • A. 

      Pyruvate dehydrogenase

    • B. 

      Alcohol dehydrogenase

    • C. 

      Lactate hydrogenase

    • D. 

      All