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Insulin/Glucagon Ratio and Ketone Bodies Formation Quiz
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Insulin/Glucagon Ratio and Ketone Bodies Formation Quiz

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Questions and Answers

What is the key role of carnitine in transporting fatty acids across the inner mitochondrial membrane?

  • Carnitine is essential for the conversion of acetoacetate to acetoacetyl CoA.
  • Carnitine is responsible for converting acetyl CoA to acetoacetyl CoA.
  • Carnitine facilitates the transport of free fatty acids into the mitochondria for β-oxidation. (correct)
  • Carnitine is involved in the direct activation of β-hydroxybutyrate.

    • What is a factor that determines whether free fatty acids are used for esterification or β-oxidation?

  • Activity of Acetoacetyl CoA Synthetase
  • Level of ATP in the blood
  • Presence of citric acid in the mitochondria
  • Availability of glycerol 3-phosphate (correct)

    • In which state is Carnitine Palmitoyl Transferase I activity inhibited?

  • Fasting state
  • Starvation state
  • Exercise state
  • Fed state (correct)

    • How does impairment of β-oxidation of fatty acids affect blood glucose levels?

    <p>Decreases blood glucose levels</p> Signup and view all the answers

    What occurs when ketogenesis exceeds the body's ability to utilize ketone bodies?

    <p>Ketosis and ketoacidosis</p> Signup and view all the answers

    Which process preferentially oxidizes ketone bodies over glucose and free fatty acids?

    <p><strong>β</strong>-Oxidation</p> Signup and view all the answers

    What is the main difference between citric acid cycle and ketone bodies in terms of ATP generation?

    <p><strong>Citric acid cycle generates more ATP than ketone bodies</strong></p> Signup and view all the answers

    Which factor would inhibit Carnitine Palmitoyl Transferase I activity?

    <p><strong>Malonyl CoA</strong></p> Signup and view all the answers

    What happens to ketone body concentration during ketosis?

    <p><strong>Ketone body concentration increases</strong></p> Signup and view all the answers

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