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 (A)</p> Signup and view all the answers

How many calories are in 1 pound of fat?

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

Which vitamin type is not water-soluble?

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

What is the main purpose of the Krebs cycle?

<p>To convert acetyl CoA into citric acid (B)</p> Signup and view all the answers

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

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

What is the purpose of gluconeogenesis?

<p>To produce glucose from non-carbohydrate precursors (B)</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 (B)</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 (A)</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 (B)</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 (C)</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 (A)</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 (C)</p> Signup and view all the answers

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