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

What is the equation for respiration?

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

What drives essential processes in organisms?

<p>Energy from respiration (C)</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 (B)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

What is the relationship between respiration and energy production?

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

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

<p>To facilitate the reaction (A)</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 (A)</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 (C)</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 (C)</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 (B)</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 (B)</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 (D)</p> Signup and view all the answers

What is the purpose of detecting carbon dioxide in respiration?

<p>To verify that respiration is occurring (C)</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 (A)</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 (B)</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 (C)</p> Signup and view all the answers

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

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

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