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

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

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

What is the caloric equivalent of 1 pound of fat?

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

Which of the following is a catabolic hormone?

<p>Cortisol (D)</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 (B)</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 (D)</p> Signup and view all the answers

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

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

What is the primary role of gluconeogenesis?

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

What is the primary energy source during the starvation state?

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

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