Biology Chapter: Respiration
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Questions and Answers

What is the primary end product of glucose breakdown in respiration, aside from energy?

  • Glucose
  • Oxygen
  • Urea
  • Carbon dioxide (correct)
  • Which statement about the process of respiration is correct?

  • All steps of respiration occur in the mitochondria.
  • Only heat energy is released during glucose breakdown.
  • Enzymes catalyze each step of the breakdown of glucose. (correct)
  • Respiration is completed in a single chemical reaction.
  • What role do proteins or fats play if carbohydrates are not directly available for energy?

  • They are stored as metabolic reserves.
  • They can be broken down to provide energy. (correct)
  • They are completely unnecessary for energy.
  • They are converted to glycolysis intermediates.
  • How much ATP is released from the breakdown of one mole of glucose?

    <p>38 molecules</p> Signup and view all the answers

    Which function does energy produced from respiration NOT support?

    <p>Transportation of oxygen in the bloodstream</p> Signup and view all the answers

    What is the significance of ATP in cellular processes?

    <p>It serves as an energy currency inside the cell.</p> Signup and view all the answers

    In terms of energy, how do animals differ from plants?

    <p>Animals generate heat for thermoregulation unlike plants.</p> Signup and view all the answers

    What primarily catalyzes the steps involved in respiration?

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

    Study Notes

    Respiration

    • A vital process for all organisms
    • Occurs continuously throughout life
    • Involves breaking down glucose for energy
    • Requires oxygen

    Chemical Reaction of Respiration

    • $C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + energy$
    • Occurs inside living cells (tissue)
    • Glucose breakdown happens in a series of steps
    • Some steps occur in the cytoplasm, others in the mitochondria
    • Each step of the breakdown is catalyzed by a specific enzyme
    • Energy released during glucose breakdown is not all heat, a majority is converted to ATP (Adenosine Triphosphate)
    • One mole of glucose produces 38 molecules of ATP
    • ATP acts as the "energy currency" within a cell

    Animals Need More Energy than Plants

    • Animals need more energy than plants for physical activities
    • Birds and mammals also need energy to regulate body temperature

    Glucose and Respiration

    • Simple carbohydrates provide the main energy source for cellular functions
    • If carbohydrates are not available, proteins and fats are broken down for energy
    • Animals that rely on proteins for food have extra amino acids that convert to Urea through digestion
    • Glucose can be used immediately or stored as glycogen for future energy demands

    Energy Use by Body cells

    • Synthesis of proteins from amino acids
    • Production of enzymes
    • Muscle contraction
    • Nerve impulse conduction
    • New cell production
    • Maintaining body temperature (primarily for warm-blooded animals)

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    Description

    Explore the essential process of respiration in organisms through this quiz. Learn how glucose is broken down for energy, the role of oxygen, and the significance of ATP in cellular activity. Test your understanding of how animals and plants utilize energy differently.

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