gas exchange

American  

[gas-iks-chaynj] / ˈgæs ɪksˌtʃeɪndʒ /

noun

1. Biology. the exchange of oxygen and carbon dioxide in an organism or its cells as one gas is absorbed from the environment and the other released, as during respiration or transpiration.

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gas exchange Scientific  

1. The diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide between an organism and its environment. In plants, gas exchange takes place during photosynthesis. In animals, gases are exchanged during respiration.

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Other Word Forms

• gas-exchange
  adjective

Example Sentences

Gas exchange by direct diffusion across surface membranes is efficient for organisms less than 1 mm in diameter.

From Textbooks • Jun. 9, 2022

Gas exchange through the atmosphere and water is one way that the carbon cycle connects all living organisms on Earth.

From Textbooks • Jun. 9, 2022

Gas exchange occurs across the moist body surface.

From Textbooks • Apr. 25, 2013

Gas exchange between the lungs and blood takes place in the alveolus.

From Textbooks • Apr. 25, 2013

Gas exchange, circulation, and excretion occur by diffusion between cells and the water.

From Textbooks • Apr. 25, 2013