Dr. S. Bryan Glycolysis Quiz
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Questions and Answers

Which of the following is NOT a function of glucagon regarding carbohydrate metabolism?

  • Promoting glycogenesis (correct)
  • Inhibiting glucose consuming pathways
  • Activating glycogen breakdown in the liver
  • Stimulating gluconeogenesis

    • Lactate is produced in actively contracting muscles due to:

  • High oxygen availability and low ATP demand
  • Low oxygen availability and high ATP demand (correct)
  • Low oxygen availability and low ATP demand
  • High oxygen availability and high ATP demand

    • The Cori cycle involves:

  • Conversion of glucose to lactate in the muscle and reconversion of lactate to glucose in the liver (correct)
  • Conversion of fatty acids to lactate in the muscle and reconversion of lactate to fatty acids in the liver
  • Conversion of glycogen to lactate in the muscle and reconversion of lactate to glycogen in the liver
  • Conversion of glucose to lactate in the liver and reconversion of lactate to glucose in the muscle

    • Which of the following is NOT a function of insulin regarding carbohydrate metabolism?

    <p>Inhibiting gluconeogenesis</p> Signup and view all the answers

    Diabetes mellitus is characterized by derangements in the metabolism of:

    <p>Carbohydrates, fats, and proteins</p> Signup and view all the answers

    Which cells in the pancreas secrete glucagon?

    <p>Alpha cells</p> Signup and view all the answers

    Which of the following statements about glycolysis is incorrect?

    <p>It occurs only in the presence of oxygen to enable aerobic cellular respiration.</p> Signup and view all the answers

    In the energy investment phase of glycolysis, which of the following occurs?

    <p>Glucose (6-C) breaks down into two molecules of pyruvate (3-C), and two ATP molecules are used up.</p> Signup and view all the answers

    What is the committed step of glycolysis?

    <p>The conversion of fructose-6-phosphate to fructose-1,6-bisphosphate.</p> Signup and view all the answers

    Which of the following is not a non-carbohydrate precursor for gluconeogenesis?

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

    In which process is lactate formed from pyruvate?

    <p>Homolactic fermentation</p> Signup and view all the answers

    What is the primary function of gluconeogenesis?

    <p>To supply the needs for plasma glucose between meals.</p> Signup and view all the answers

    What is the most common type of diabetes mellitus?

    <p>Type 2 diabetes</p> Signup and view all the answers

    What is the target range for normal blood glucose levels?

    <p>65-100 mg/dL</p> Signup and view all the answers

    Which of the following is a key feature of type 2 diabetes?

    <p>Insulin resistance</p> Signup and view all the answers

    What is the diagnostic criteria for diabetes mellitus based on the oral glucose tolerance test (OGTT)?

    <p>Fasting &gt; 126 mg/dL and 2hr &gt; 198 mg/dL</p> Signup and view all the answers

    What is the purpose of the HbA1c (glycated hemoglobin) test in diabetes management?

    <p>To measure the average blood sugar level over the past 2-3 months</p> Signup and view all the answers

    Which of the following processes involves the synthesis of glucose from non-carbohydrate precursors?

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

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