The exchange of oxygen (O₂) and carbon dioxide (CO₂) in body cells is called A) inhalation. B) metabolism. C) external respiration. D) internal respiration. E) catabolism.

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Internal respiration refers to the exchange of oxygen and carbon dioxide between the body's cells and the blood. This process occurs during cellular respiration, in which glucose is broken down into energy, carbon dioxide, and water. Internal respiration is distinct from external respiration, which refers to the exchange of oxygen and carbon dioxide between the lungs and the blood during breathing.

The Exchange of Oxygen (O2) and Carbon Dioxide (CO2) in Body

The Exchange of Oxygen (O₂) and Carbon Dioxide (CO₂) in Body