Metabolism and Nutrition Chapter 24.1 Quiz
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Questions and Answers

What percentage of energy used during ATP production creates heat?

  • 60% (correct)
  • 40%
  • 50%
  • 70%

    • At what temperature is a naked human most comfortable?

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

    • Which method of heat transfer accounts for 60% of heat loss in humans?

  • Radiation (correct)
  • Convection
  • Evaporation
  • Conduction

    • What is the difference between Basal Metabolic Rate (BMR) and Metabolic Rate?

    <p>BMR is energy expended at rest, Metabolic Rate includes physical activity</p> Signup and view all the answers

    How many calories are in 1 pound of fat?

    <p>3500 calories</p> Signup and view all the answers

    Which vitamin type 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 convert acetyl CoA into citric acid</p> Signup and view all the answers

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

    <p>To produce ATP</p> Signup and view all the answers

    What is the purpose of gluconeogenesis?

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

    What is the role of insulin in carbohydrate metabolism?

    <p>Insulin causes glucose to be stored and stimulates protein synthesis</p> Signup and view all the answers

    What is the primary function of the urea cycle?

    <p>To convert amino acids into urea for excretion</p> Signup and view all the answers

    What is the role of ketone bodies in metabolism?

    <p>Ketone bodies are the primary source of energy for the brain during starvation</p> Signup and view all the answers

    What is the primary purpose of lipogenesis?

    <p>To convert excess acetyl CoA into fatty acids and triglycerides</p> Signup and view all the answers

    What is the difference between the absorptive and postabsorptive states?

    <p>The absorptive state is when the body is actively digesting and absorbing food, while the postabsorptive state is when the body is fasting</p> Signup and view all the answers

    What is the primary function of the catabolic pathways in metabolism?

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

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