Biochemistry: Enzymes and Isoenzymes
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Questions and Answers

Which of the following is NOT a source of AST?

  • Kidney (correct)
  • Muscle
  • Liver
  • Heart
  • Which acid phosphatase is inhibited by L-tartrate ions?

  • Acid Phosphatase of Pleural Cancer
  • Prostatic ACP
  • RBC ACP (correct)
  • Isoenzyme of Adenocarcinoma of the pancreas
  • A patient with De Ritis ratio > 1 may indicate:

  • Muscular dystrophy
  • Chronic alcoholism (correct)
  • Reye's syndrome
  • Acute hepatitis
  • Which enzyme is used as a surrogate test for hepatitis?

    <p>ALT</p> Signup and view all the answers

    Which enzyme breaks down glycogen and starch?

    <p>Amylase</p> Signup and view all the answers

    Which of the following is NOT a cause of increased amylase?

    <p>Hepatitis</p> Signup and view all the answers

    Which isoenzyme of aldolase is found in brain tissue?

    <p>Aldolase C</p> Signup and view all the answers

    What is the most sensitive marker of acute alcoholic hepatitis?

    <p>GGT</p> Signup and view all the answers

    Which enzyme deficiency can lead to drug-induced hemolytic anemia?

    <p>Glucose-6-Phosphate Dehydrogenase</p> Signup and view all the answers

    What is the primary source of GGT?

    <p>Biliary duct linings</p> Signup and view all the answers

    Which enzyme is increased in skeletal muscle disease?

    <p>Aldolase A</p> Signup and view all the answers

    What is the primary function of Glucose-6-Phosphate Dehydrogenase?

    <p>Neutralize peroxide</p> Signup and view all the answers

    What is the primary advantage of an angle rotor centrifuge over a swinging bucket centrifuge?

    <p>Faster sedimentation due to decreased air resistance</p> Signup and view all the answers

    What is the primary difference between air displacement and positive-displacement pipets?

    <p>Air displacement pipets operate by moving the piston in the pipet tip</p> Signup and view all the answers

    Which of the following analytes would likely increase in an individual after exercising?

    <p>Lactate dehydrogenase</p> Signup and view all the answers

    What is the purpose of a strobe light in a centrifuge?

    <p>To measure the speed of the centrifuge</p> Signup and view all the answers

    Why is a pipet's aspiration force important?

    <p>It allows for high-density sample pipetting</p> Signup and view all the answers

    Which of the following would decrease after exercising?

    <p>Glucose</p> Signup and view all the answers

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