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Metabolism and Nutrition: Overview of Metabolic Reactions
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Metabolism and Nutrition: Overview of Metabolic Reactions

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Questions and Answers

What percentage of energy used during ATP production is converted to heat?

  • 10%
  • 60% (correct)
  • 30%
  • 80%
  • What is the thermoneutral temperature for a naked human?

  • 90 degrees
  • 84 degrees (correct)
  • 70 degrees
  • 78 degrees
  • Which mode of heat transfer accounts for the largest percentage of heat loss from the body?

  • Evaporation
  • Conduction
  • Convection
  • Radiation (correct)
  • What percentage of the body's total energy expenditure is attributed to thermoregulation?

    <p>10%</p> Signup and view all the answers

    Which macronutrient requires the most energy to break down?

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

    Which vitamin is NOT considered a fat-soluble vitamin?

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

    Which of the following is the primary purpose of catabolic reactions?

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

    What is the relationship between the Krebs cycle and the electron transport chain in the process of ATP production?

    <p>The Krebs cycle produces NADH and FADH2, which are then used in the electron transport chain to generate ATP.</p> Signup and view all the answers

    During the process of gluconeogenesis, which of the following molecules can be converted into glucose in the liver?

    <p>All of the above</p> Signup and view all the answers

    What is the primary function of the electron transport chain in the process of ATP production?

    <p>Both a and b</p> Signup and view all the answers

    During the absorptive state, which of the following processes is most likely to be dominant?

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

    What is the primary function of insulin during the absorptive state?

    <p>To promote the conversion of glucose into fatty acids and the storage of fat.</p> Signup and view all the answers

    Which of the following is the primary energy source used by the body during the postabsorptive (fasting) state?

    <p>Fatty acids</p> Signup and view all the answers

    What is the role of the Krebs cycle in the process of ATP production?

    <p>The Krebs cycle produces NADH and FADH2, which are then used in the electron transport chain to generate ATP.</p> Signup and view all the answers

    Which of the following hormones is primarily associated with catabolic processes in the body?

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

    What is the primary function of the cholecystokinin (CCK) hormone in the context of lipid metabolism?

    <p>Both a and b</p> Signup and view all the answers

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