Fichas
term 3 f3/ t1 f4 gaseous exchange
Fichas del conjunto (6)
- 1define a gaseous exchange surfacea surface adapted for the diffusion of carbon dioxide and oxygen
- 2describe some properties that a g.e.s must have if it depends on slow passive diffusion for movement1. it should be thin ensuring a short distance for travel of the gases
2. it should have a large surface area to maximize absorption
3. it should be moist as gases diffuse faster when dissolved in a liquid
4. close to a rapid transport system to move gases to cells quickly and maintain a steep concentration gradient at the surface - 3describe the gaseous exchange surface of 1. plants 2. amoeba 3. worms1. stomatal pores on the under surface of leaves that allow air to flow into the air spaces of the mesophyll layer
2. the cell surface membrane where gas diffuse across
3. moist skin as the worm lives in the soil. surface cells also secrete mucus for easier diffusion - 4describe the gaseous exchange surface of 4. insects 5. fish 6. mammals4. tracheal system starting with outer pores into air channels and chambers throughout the insects body
5. gill lamellae that is inflated by oxygenated water
6. alveoli air sacs that are filled with oxygen rich air at inhalation - 5draw and label the G.E.S of a human
- 6draw and label the G.E.S of a fish
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- 3-5 Biology Fichas sobre term 3 f3/ t1 f4 gaseous exchange, creado por allisten cooper el 27/04/2016.
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- allisten cooper
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