Biochemistry and Medical Laboratory Techniques Quiz
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Questions and Answers

Why does the presence of alpha – fetoprotein interfere with the result of protein analysis by electrophoresis in a pregnant woman?

  • It causes coagulation factors to form in the electrophoretic pattern
  • It creates undesirable wave (band) between beta and gamma globulin bands in the electrophoretic pattern (correct)
  • It leads to an inaccurate measurement of albumin levels
  • It reduces the overall protein concentration in the blood sample

    • Why is it difficult for humans to absorb cellulose?

  • Cellulose has a complex molecular structure that prevents absorption in the human digestive system
  • Cellulose contains high levels of phosphorus, which competes with calcium absorption
  • Cellulose consists of repeating units of glucose bound together by beta-linkages, which humans cannot break down due to absence of the necessary enzyme (correct)
  • Cellulose is a polysaccharide that interferes with the absorption of essential vitamins

    • What is the main function of lipase secreted by the pancreas?

  • Hydrolyze proteins into amino acids
  • Emulsify dietary fats for better absorption
  • Convert triglycerides into cholesterol
  • Break down lipids into fatty acids and glycerol (correct)

    • Why is serum used instead of plasma in electrophoresis?

    <p>Plasma contains coagulation factors such as fibrinogen, which interfere with the electrophoretic pattern</p> Signup and view all the answers

    Why does cola decrease the absorption of Ca+2?

    <p>Cola contains high amount of phosphorus (Phosphoric acid) that competes with Ca+2 and reduces its absorption.</p> Signup and view all the answers

    Why is it difficult to test the blood of a pregnant woman by electrophoresis?

    <p>Due to the interference of alpha – fetoprotein with the result of the analytic protein.</p> Signup and view all the answers

    Why does cola decrease the absorption of Ca+2?

    <p>Due to the high amount of phosphoric acid which competes with Ca+2 and reduces its absorption.</p> Signup and view all the answers

    What is the main function of lipase secreted by the pancreas?

    <p>Breaking down lipids.</p> Signup and view all the answers

    Why can't humans absorb cellulose?

    <p>Due to absence of the enzyme that breaks beta-linkages in humans.</p> Signup and view all the answers

    Why do we use serum instead of plasma in electrophoresis?

    <p>Because plasma contains coagulation factors such as fibrinogen which interfere with electrophoretic results.</p> Signup and view all the answers

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