Biochemistry Quiz: Lipid Metabolism

15 Questions | Total Attempts: 62

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Metabolism Quizzes & Trivia

Questions and Answers
  • 1. 
    Which of the following options is correct?
    • A. 

      Cholestasis has no significant  effect on  LDL

    • B. 

      Hypothyroidism increase LDL cholesterol in circulation

    • C. 

      Antiretroviral drugs prevent exacerbate hyperlipidemia

    • D. 

      After overnight fasting time,  if CMs cleared ,there may be a pathological disturbance.

  • 2. 
    Familial hypertriglyceridemia occurs due to hepatic overproduction of apoB.
    • A. 

      True

    • B. 

      False

  • 3. 
    Which of the following options is correct?
    • A. 

      Nicotinic acid bind with bile acids in the gut  prevent their absorption

    • B. 

      Statins (HMG-CoA reductase inhibitors ) are the main treatment for hypertriglyceridemia:

    • C. 

      Tangier disease reduced HDL levels.

    • D. 

      CM, VLDL & LDL are absent from the plasma in Hypobetalipoproteinemia 

  • 4. 
    HDL transports cholesterol to extrahepatic tissues.
    • A. 

      True

    • B. 

      False

  • 5. 
    One of the following options is correct:
    • A. 

      VLDL has a less mean diameter than LDL .

    • B. 

      Circulating lipoproteins are  static process 

    • C. 

      Apolipoprotein E can be exist in IDL

    • D. 

      IDL has a higher density than HDL

  • 6. 
    The polar lipid surface layer of lipoproteins consists a cholesterol.
    • A. 

      True 

    • B. 

      False

  • 7. 
    One of the following options is incorrect:
    • A. 

      Hepatic triglyceride lipase inhibited by A-|| at high concentration .

    • B. 

      Mobilizing lipase  activated by the decrease glucagon and insulin 

    • C. 

      CMs transfer apoA to HDL & acquire apoC & apoE from HDL.

    • D. 

      VLDL remnants are called IDL

  • 8. 
    Lipoprotein lipase is located on the luminal surface of the capillary endothelium of lactating breast.
    • A. 

      True

    • B. 

      False

  • 9. 
    One of the following options is correct:
    • A. 

      Not all LDL is formed from VLDL

    • B. 

      The number of LDL-apoB receptors on the cell surface regulated by cholesterol pool

    • C. 

      C-|| inhibits clearance CM and VLDL remnant particles

    • D. 

      All VLDL are formed from TGs synthesized in the liver (endogenous VLDL)

  • 10. 
    Hypertriglyceridemia is a more important one compared to LDL cholesterol regarding to a risk factor of CHD.
    • A. 

      True

    • B. 

      False

  • 11. 
    Which of the following options is incorrect:
    • A. 

      Homozygotes familial hypercholesterolemia develop CHD in childhood.

    • B. 

      Disfunction of apoE and change in their structure impaired IDL uptake by liver 

    • C. 

      We use TGs with medium chain-length FAs to management the Familial hyperalphalipoproteinemia 

    • D. 

      Familial defective apoB-100 is a Familial hypercholesterolemia

  • 12. 
    Which of the following options is incorrect?
    • A. 

      There is no effect after menopause regarding to plasma lipoproteins

    • B. 

       Increasing risk of acute pancreatitis when plasma TG concentration > 10 m mol/L 

    • C. 

      High P/S ratio increase LDL cholesterol 

    • D. 

      Small dense TG-rich LDL particles related to the third type of LDL 

  • 13. 
    Plasma lipids should be measured in brain stroke patients.
    • A. 

      True

    • B. 

      False

  • 14. 
    Remnant hyperlipoproteinemia increases LDL cholesterol.
    • A. 

      True

    • B. 

      False

  • 15. 
    One of the following options is incorrect:
    • A. 

      Cholesterol presents in dietary fat.

    • B. 

      Palmitic acid is an example of Triglycerides 

    • C. 

      Body can synthesize  essential FAs .

    • D. 

       Management of hypercholesterolemia reduces CVD mortality.

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