Metabolism and Nutrition: Overview of Metabolic Reactions
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Questions and Answers

What percentage of energy used during ATP production creates heat?

  • 20%
  • 60% (correct)
  • 40%
  • 80%

    • What is the thermoneutral temperature for a naked human?

  • 90 degrees
  • 84 degrees (correct)
  • 78 degrees
  • 70 degrees

    • Which method of heat transfer accounts for the most heat loss in the body?

  • Evaporation
  • Radiation (correct)
  • Conduction
  • Convection

    • What percentage of energy expended is used for basic organ function in the body?

    <p>70%</p> Signup and view all the answers

    Which macronutrient uses the most energy to break down?

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

    Which vitamin is NOT water-soluble?

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

    What is the main purpose of the Krebs cycle?

    <p>To generate electron donors for the electron transport chain</p> Signup and view all the answers

    What is the primary function of the electron transport chain (ETC)?

    <p>To pump hydrogen ions (H+) out of the mitochondrial matrix</p> Signup and view all the answers

    What is the overall purpose of anabolic reactions in metabolism?

    <p>To synthesize larger molecules from smaller ones</p> Signup and view all the answers

    What is the primary purpose of the Krebs cycle in the context of cellular respiration?

    <p>To generate electron donors for the electron transport chain</p> Signup and view all the answers

    What is the main function of gluconeogenesis?

    <p>To produce glucose from non-carbohydrate precursors</p> Signup and view all the answers

    What is the primary function of the electron transport chain (ETC) in cellular respiration?

    <p>To pump hydrogen ions (H+) out of the mitochondrial matrix</p> Signup and view all the answers

    What is the overall purpose of catabolic reactions in metabolism?

    <p>To break down large molecules for energy</p> Signup and view all the answers

    What is the main purpose of the Krebs cycle in the context of cellular respiration?

    <p>To generate electron donors for the electron transport chain</p> Signup and view all the answers

    What is the main function of glycolysis in cellular respiration?

    <p>To convert glucose to pyruvate</p> Signup and view all the answers

    What is the primary role of insulin in metabolism?

    <p>To facilitate the uptake of glucose into cells</p> Signup and view all the answers

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