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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 creates heat?

  • 40%
  • 80%
  • 70%
  • 60% (correct)
  • At what temperature is a naked human considered to be in a thermoneutral state?

  • 84 degrees (correct)
  • 78 degrees
  • 90 degrees
  • 72 degrees
  • Which of the following is NOT a way heat is transferred from the human body?

  • Convection
  • Radiation
  • Combustion (correct)
  • Conduction
  • What percentage of heat is lost through radiation from the human body?

    <p>60%</p> Signup and view all the answers

    What percentage of the basal metabolic rate (BMR) is attributed to basic organ function in the body?

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

    How many calories are equivalent to one pound of fat?

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

    What is the primary purpose of the Krebs cycle in cellular metabolism?

    <p>To convert pyruvate into acetyl CoA for further oxidation</p> Signup and view all the answers

    Which of the following is the correct description of the process of gluconeogenesis?

    <p>The synthesis of glucose from non-carbohydrate precursors</p> Signup and view all the answers

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

    <p>To create a proton gradient that drives the synthesis of ATP</p> Signup and view all the answers

    Which of the following hormones is primarily involved in the regulation of catabolic processes in the body?

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

    What is the primary function of the urea cycle in protein metabolism?

    <p>To convert ammonia, a toxic byproduct of amino acid metabolism, into urea for excretion</p> Signup and view all the answers

    Which of the following is the correct description of the process of lipolysis?

    <p>The breakdown of stored triglycerides into fatty acids and glycerol</p> Signup and view all the answers

    What is the primary purpose of ketogenesis in the body?

    <p>To produce ketone bodies as an alternative fuel source when glucose is scarce</p> Signup and view all the answers

    Which of the following is the correct description of the absorptive state in metabolism?

    <p>A state of energy surplus where the body stores excess nutrients as glycogen and fat</p> Signup and view all the answers

    What is the primary role of insulin in carbohydrate metabolism?

    <p>To facilitate the uptake of glucose by cells and the storage of excess glucose as glycogen</p> Signup and view all the answers

    Which of the following is the correct description of the process of lipogenesis?

    <p>The synthesis of triglycerides from fatty acids and glycerol for storage in adipose tissue</p> Signup and view all the answers

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