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Why respiration is a catabolic process? explain [ 2 marks]

Why respiration is a catabolic process? explain [ 2 marks]

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  • Respiration is the process by which tissues and cells in the body receive oxygen in exchange of carbon dioxide.
  • In external respiration, the exchange occurs in lungs where the capillaries receive oxygen from alveoli and carry them to body tissues.
  • In internal respiration, the exchange occurs at tissue level where cells in body receive oxygen from systemic capillaries.
  • This oxygen then enters cellular respiration.
  • In cellular respiration, production of digestion such as glucose is further brokendown in the presence of oxygen.
  • Breakdown of glucose leads to production of ATP (Adenosine triphosphate).
  • ATP is the energy needed by body to perform all the physiological processes.
  • As, glucose is brokendown into ATP, respiration is a catabolic process.
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