Gas exchange in animals definitions
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5 Terms
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Gas exchange
The diffusion of oxygen and carbon dioxide between an organism and its environment across a specialised exchange surface to supply oxygen for respiration and to remove co2
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volume
total space inside the organism
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surface area
the outside area of the organism that is in contact with the environment
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concentration gradient
the difference in concentration of a substance between two areas
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whats the requirement needed for gases to be able to diffuse across membranes?
gases must dissolve in water before they can move across cell membrane by simple diffusion
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