Metabolism and Nutrition: Overview of Metabolic Reactions
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Questions and Answers

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

  • 20%
  • 10%
  • 60% (correct)
  • 50%
  • Which mode of heat transfer accounts for the largest percentage of heat loss from the human body?

  • Convection
  • Radiation (correct)
  • Evaporation
  • Conduction
  • Which of the following is the main factor determining a person's basal metabolic rate?

  • Thermoregulation
  • Physical activity level
  • Organ function (correct)
  • Energy consumption
  • Which of the following nutrients requires the most energy to break down in the body?

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

    Which of the following vitamins is considered a water-soluble vitamin?

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

    What is the caloric equivalent of 1 pound of fat?

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

    What is the primary function of ATP in metabolic reactions?

    <p>To serve as the body's energy currency</p> Signup and view all the answers

    Which of the following is a catabolic hormone?

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

    In the process of glycolysis, how many ATP molecules are initially consumed and how many are produced?

    <p>2 ATP consumed, 4 ATP produced</p> Signup and view all the answers

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

    <p>To generate ATP through oxidative phosphorylation</p> Signup and view all the answers

    Which of the following is a product of the Krebs cycle?

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

    What is the primary role of gluconeogenesis?

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

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

    <p>To stimulate the release of pancreatic lipase and bile salts</p> Signup and view all the answers

    During the absorptive state, what is the primary metabolic relationship between catabolism and anabolism?

    <p>Anabolism is greater than catabolism</p> Signup and view all the answers

    What is the primary energy source during the starvation state?

    <p>Ketone bodies</p> Signup and view all the answers

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