Biochem Biosignaling 2

20 Questions | Total Attempts: 89

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Biochemistry Quizzes & Trivia

Helpful quiz for biochem. This topic is biosignaling. 20 questions


Questions and Answers
  • 1. 
    Which of the following is a repector that signals via Gq?
    • A. 

      Alpha 2 receptors

    • B. 

      Beta receptors

    • C. 

      M3 receptors

    • D. 

      M4 receptors

  • 2. 
    PIP2 is cleaved into what?
    • A. 

      IP3 and DAG

    • B. 

      IP3 and NO

    • C. 

      Calcium and DAG

    • D. 

      NO and DAG

  • 3. 
    What enzyme is actived by the Gq alpha subunit?
    • A. 

      Guanylate cyclase

    • B. 

      Protein kinase C

    • C. 

      ATPase

    • D. 

      Phospholipase C-beta

  • 4. 
    Which of the following is an ubiquitous calcium binding cellular protein?
    • A. 

      Diacyl glycerol

    • B. 

      SOS

    • C. 

      Calmodulin

    • D. 

      None of the above

  • 5. 
    What are CAM kinases activated by?
    • A. 

      Ca calmodulin complex

    • B. 

      Na calmodulin complex

    • C. 

      S calmodulin complex

    • D. 

      N calmodulin complex

  • 6. 
    What actives protein kinase C (PKC)?
    • A. 

      IP3 and calcium

    • B. 

      IP3 and DAG

    • C. 

      Phospholipase C-beta

    • D. 

      DAG and calcium

  • 7. 
    When catalytic domains phosphorylate each other it is called?
    • A. 

      Tyrosine kinase

    • B. 

      Autophosphorylation

    • C. 

      Proliferation

    • D. 

      None of the above

  • 8. 
    Upon activation what substrate protein will a insulin receptor phosphorylate?
    • A. 

      IRS-1

    • B. 

      Grb2

    • C. 

      SOS

    • D. 

      Ras

  • 9. 
    What binds the phosphotyrosine residue on IRS-1 and recruits SOS?
    • A. 

      MEK

    • B. 

      Grb2

    • C. 

      Raf-1

    • D. 

      Ras

  • 10. 
    Which of the following is a GTP exchange protein (GEP)?
    • A. 

      IRS-1

    • B. 

      Grb2

    • C. 

      SOS

    • D. 

      Ras

  • 11. 
    Whcih of the following is a monomeric G protein and when it is active stimulates Raf-1
    • A. 

      IRS-1

    • B. 

      Grb2

    • C. 

      SOS

    • D. 

      Ras

  • 12. 
    Where is erythropoietin mainly produced?
    • A. 

      Liver

    • B. 

      Kidney

    • C. 

      Pancreas

    • D. 

      Gonads

  • 13. 
    A deficiency of erythropoietin may lead to?
    • A. 

      Agina pectoris

    • B. 

      Diabetes mellitus

    • C. 

      Anemia

    • D. 

      Diabetes insipidus

  • 14. 
    What type of activity does natriuretic factor receptors have on their catalytic domains?
    • A. 

      Adenylyl cyclase enzyme activity

    • B. 

      Guanylyl cyclase enzyme activity

    • C. 

      Phospholipase C- beta enzyme activity

    • D. 

      Phosphodiesterase enzyme activity

  • 15. 
    What converts GTP into cGMP?
    • A. 

      Guanylyl cyclase

    • B. 

      Adenylyl cyclase

    • C. 

      Nitric oxide synthase

    • D. 

      Phospholipase C-beta

  • 16. 
    What neurotransmitter is released at the the parasympathetic end?
    • A. 

      Epinephrine

    • B. 

      Norepinephrine

    • C. 

      Acetylcholine

    • D. 

      None of the above

  • 17. 
    What converts arginine into citruline and nitric oxide?
    • A. 

      Guandylyl cylase

    • B. 

      Adenylyl cyclase

    • C. 

      Nitric oxide synthase

    • D. 

      Phospholipase C-beta

  • 18. 
    What are compounds that release nitric oxde helpful in treating?
    • A. 

      Agina pectoris

    • B. 

      ED

    • C. 

      Amemia

    • D. 

      A and B

  • 19. 
    Which of the following is a type-V phosphodiesterase inhibitor?
    • A. 

      Bactrim

    • B. 

      Sildenafil

    • C. 

      Eyrthromycin

    • D. 

      Tetracycline

  • 20. 
    Nitric oxide was once known as?
    • A. 

      Only nitric oxide

    • B. 

      NO

    • C. 

      Endothelial-derived relaxing factor

    • D. 

      Vascular relaxing factor