Biology: Nutrient, Metabolism, Catabolism, Anabolism
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Questions and Answers

What is the definition of a nutrient?

  • A chemical that converts stored energy into working energy.
  • A chemical that uses energy to produce larger molecules from smaller subunits.
  • A chemical that breaks down larger molecules into smaller subunits.
  • A chemical that must be obtained from the environment to survive and provides raw material for growth and repair, as well as a source of energy. (correct)

    • What is the difference between catabolism and anabolism?

  • Catabolism is the breakdown of larger molecules into smaller subunits, while anabolism is the construction of larger molecules from smaller subunits. (correct)
  • Catabolism is the minimum amount of energy required to keep an organism alive, while anabolism is the chemical signal or messenger molecule circulated through the body.
  • Catabolism is the set of chemical reactions necessary to maintain life, while anabolism is the rate at which the body converts stored energy into working energy.
  • Catabolism is the rate at which the body converts stored energy into working energy, while anabolism is the minimum amount of energy required to keep an organism alive.

    • What is the basal metabolic rate (BMR)?

  • The minimum energy required to keep an organism alive. (correct)
  • The set of chemical reactions that occur in living organisms that are necessary to maintain life.
  • The rate at which the body converts stored energy into working energy.
  • The chemical signal or messenger molecule circulated through the body.

    • What is the purpose of hormones?

    <p>Hormones are chemical signals or messenger molecules circulated through the body to coordinate cellular functions.</p> Signup and view all the answers

    What is the relationship between basal metabolic rate (BMR) and daily energy requirements?

    <p>Daily energy requirements depend on both BMR and physical activity level.</p> Signup and view all the answers

    Which of the following is not a component of an organism's metabolism?

    <p>Hormone production</p> Signup and view all the answers

    What is the primary function of the enzyme 'Analyse' mentioned in the text?

    <p>Break down complex carbohydrates</p> Signup and view all the answers

    Which hormone stimulates the release of hydrochloric acid and pepsinogen in the stomach?

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

    What is the main role of the mineral calcium in the body?

    <p>Support bone health</p> Signup and view all the answers

    What is the function of lipids in the body based on the text?

    <p>Store and release energy</p> Signup and view all the answers

    Which of the following is NOT a function of the human digestive system?

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

    What role does the sphincter muscle play in the digestive system?

    <p>Contract to close openings</p> Signup and view all the answers

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