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BIOL02
Respiration
4
Biology
Undergraduate 1
03/04/2009

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Term
Respiration
Definition
The exchange of gases between an organism and the surrounding environment
Term
Ventilation
Definition
Increasing the flow of water or air over the respiratory surfaces
Term
Name 4 important points about the diffusion of gases
Definition
1. Gases must pass through liquid to get to cells.
2. The greater the surface area for the gas exchange, the more gas can diffuse.
3. Diffusion depends on gas concentration and gas pressure.
4. Oxygen diffuses about 8000x faster in water than air.
Term
What type of water holds the most dissolved oxygen?
Definition
Cold, fresh water.
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