ecology
- Created by: bethany1222
- Created on: 17-11-22 21:28
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- Decomposition
- Ecology
- mineral uptake
- must have a high supply of oxygen for the energy needed.
- For nitrate ions into the cell they must travel against the concentration gradient from low to high.
- Root hair cells adapt to have a large surface area via finger-like extension.
- Green plants produce amino acids which are converted into protein.
- Nitrgoen cycle
- in the soil, nitrogen changes into nitrate.
- Plants take up nitrate via their roots by active uptake to make amino acids.
- Animals cannot do this and must eat plants to get protein.
- Decomposing bacteria feeds on the protein of dead animals and urine.
- This decay produces ammonia and nitrifying bactera in the soil converts the ammonia into nitrates.
- This is taken up by the plant roots which converts back into nitrogen gas.
- Energy transfer
- 2) energy in plants eaten by animals.
- 3) energy lost through excretion, egestion, death and decomposition
- energy lost as heat from respiration
- 1) suns energy is trapped in plants
- energy lost as heat from respiration
- mineral uptake
- Bacteria and fungi are decomposers
- Smaller nutrients can be asborbed into fungal cells
- Dead material broken down by detritivores e.g worms.
- This is called extra celleur digestion
- Enzymes into the material to start digestion of larger molecules.
- Increased surface area for bacteria to work,
- Ecology
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