What are the differences between respiration, gas exchange and breathing?

by Naina
(Pakistan)

Visitor's comment: Respiration is the release of energy from glucose or another organic chemical. Breathing is the process that moves air in and out of the lungs. Gas exchange takes place at a respiratory surface —a boundary between the external environment and the interior of the organism. Respiration occurs in cell. Gas exchange occurs in alveoli in lungs. Breathing occurs through the airways.

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Difference BTW Respiration Gaseous Excange Breathing
by: Rabia Sabir Abbottabad @iamrabiasabir

Respiration is the process in which food is oxidized to release energy. Complex organic compounds are converted into simpler ones, e.g glucose into CO2 water and energy released. Gaseous exchange is the diffusion of gases from a region of higher concentration to a region of lower one. It is used for exchange of oxygen and CO2 btw organism and its environment. Breathing is the inhalation and exhalation of air for the intake of oxygen and giving out of CO2. Oxygen is inhaled and CO2 is exhaled due to breathing.
Bio Assignments
by: Nicole

Breathing is the physical process by which air is passed on a gaseous exchange surface i.e. ventilation of the gaseous exchange surface. It involves Inhalation and Exhalation.

Gas/Gaseous exchange is the process whereby gasses diffuse across a gaseous exchange surface. In humans, oxygen diffuses from the inhaled air into the blood and carbon dioxide diffuses from the blood into the exhaled air. The gaseous exchange surface here being the Alveoli.

Respiration is the metabolic process whereby organic molecules are broken down to release energy in the cells. In humans, this process takes place inside the mitochondria of cells. Aerobic respiration requires oxygen whereas qnqerobic respiration takes place in absence of oxygen.

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