Gr 8 Natural Sciences Ch 1.1: Respiration
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Questions and Answers

What is the primary source of energy for organisms?

  • Oxygen
  • Water
  • Carbon dioxide
  • Food (correct)

    • What is the term for the process of breaking down glucose to release energy, water, and carbon dioxide?

  • Respiration (correct)
  • Photosynthesis
  • Decomposition
  • Fermentation

    • What is the purpose of limewater in detecting carbon dioxide?

  • To measure the amount of oxygen
  • To measure the energy released during respiration
  • To test for the presence of carbon dioxide (correct)
  • To detect the presence of glucose

    • What is the by-product of respiration that must be removed from the organism?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    What is the equation for respiration?

    <p>Glucose + Oxygen → Carbon dioxide + Water + Energy</p> Signup and view all the answers

    What drives essential processes in organisms?

    <p>Energy from respiration</p> Signup and view all the answers

    What is the term for the solution used to test for the presence of carbon dioxide?

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

    What is analogous to burning fuel to release energy in biological terms?

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

    Which of the following is NOT a reactant in the process of respiration?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the purpose of removing by-products of respiration from the organism?

    <p>To maintain cellular functions</p> Signup and view all the answers

    What is the result of bubbling carbon dioxide through clear limewater?

    <p>The solution turns milky</p> Signup and view all the answers

    What is the term for the process of releasing energy from food?

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

    Which of the following is an example of a process that requires energy derived from respiration?

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

    What is the relationship between respiration and energy production?

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

    What is the role of oxygen in the process of respiration?

    <p>To facilitate the reaction</p> Signup and view all the answers

    What is the significance of carbon dioxide as a by-product of respiration?

    <p>It is a waste product that must be removed</p> Signup and view all the answers

    What is the primary function of energy released during respiration in organisms?

    <p>To drive essential processes such as movement and growth</p> Signup and view all the answers

    Which of the following is a characteristic of respiration?

    <p>It releases energy, water, and carbon dioxide as by-products</p> Signup and view all the answers

    What is the significance of carbon dioxide as a by-product of respiration?

    <p>It is a waste product that must be removed from the organism</p> Signup and view all the answers

    How does the process of respiration in organisms compare to burning fuel?

    <p>It is an analogous process that releases energy in the form of light and heat</p> Signup and view all the answers

    What is the role of oxygen in the process of respiration?

    <p>It is a reactant in the process of respiration</p> Signup and view all the answers

    What is the purpose of detecting carbon dioxide in respiration?

    <p>To verify that respiration is occurring</p> Signup and view all the answers

    What is the relationship between respiration and the breakdown of glucose?

    <p>Respiration is a process that breaks down glucose molecules</p> Signup and view all the answers

    What is the significance of energy released during respiration?

    <p>It is used to drive essential processes such as movement and growth</p> Signup and view all the answers

    What is the primary function of energy released during respiration in cells?

    <p>To drive essential processes such as movement and growth</p> Signup and view all the answers

    What is the biochemical process by which cells break down glucose to release energy?

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

    What is the significance of removing carbon dioxide and water from the organism?

    <p>To maintain cellular functions and prevent toxicity</p> Signup and view all the answers

    What is the relationship between glucose and oxygen in respiration?

    <p>Glucose and oxygen are reactants in the process of respiration</p> Signup and view all the answers

    What is the importance of detecting carbon dioxide in respiration?

    <p>To confirm the presence of carbon dioxide as a by-product of respiration</p> Signup and view all the answers

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