Respiration in Physiology and Biochemistry
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Questions and Answers

What is the physiological definition of respiration?

  • The movement of oxygen from the cells to the outside environment
  • The movement of carbon dioxide from the cells to the outside environment
  • The movement of carbon dioxide from the outside environment to the cells
  • The movement of oxygen from the outside environment to the cells (correct)
  • How does ventilation contribute to gas exchange in the lung?

  • It is the process of releasing waste products in the form of ATP and NADPH
  • It involves the in and out movement of air in the lungs (correct)
  • It refers to the circulation of blood in the pulmonary capillaries
  • It is the diffusion and transport of metabolites between the organism and the external environment
  • What distinguishes cellular respiration from physiologic respiration?

  • Cellular respiration takes place in individual cells, while physiologic respiration takes place in tissues (correct)
  • Cellular respiration is necessary for life, while physiologic respiration is not
  • Cellular respiration refers to a metabolic process, while physiologic respiration refers to a respiratory cycle
  • Cellular respiration involves diffusion and transport of metabolites, while physiologic respiration involves gas exchange in the lungs
  • What causes pressure variation during inhalation (breathing in)?

    <p>Contraction of the diaphragm muscle</p> Signup and view all the answers

    What does perfusion refer to in the context of physiological respiration?

    <p>Circulation of blood in the pulmonary capillaries</p> Signup and view all the answers

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