process in which decomposers break down nitrogenous compounds in ammonia or ammonium ions
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Artificial fertilisers
manufactured fertiliser such as ammonium sulfate
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Chemosynethesis
the synthesis of organic compunds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals , typically in the absence of sunlight
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Deamination
The removal of amino group from an amino acid or other compound
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Denitrifying bacteria
Bacterium that gets its energy from by converting nitrate to nitrogen gas
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Eutrophication
Addition of nutrients to a body of water, often results in the growth and then death of algae ans the growth of large population of aerobic bacteria decreasing the oxygen conc in the water
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Extracellular digestion
A process in which saprobionts feed by secreting enzymes through the cell membrane onto the food
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Leaching
washing out of soil
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Natural fertilisers
substance such as manure made from living material ans contains nutrients which can help plant growth
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Nitrate
salt of nitric acid composed of ions - formula NO3-
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Nitrate, phosphate and potassium (NPK)
the tree primary nutrients for healthy plant growth - NPK value of a crop is the ratio of nitrogen: phosphorus: potassium that it requires
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Nitrification
conversion of ammonia to nitrIte and of nittrite to nitrAte
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Nitrifying bacteria
Bacteria that convert ammonia to nirIte or nitrIte to nitrAte
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Nitrogen fixation
Changing unreactive nitrogen gas N2 into a more reactive compound such as ammonia or nitrate for use by plants
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Nitrogenous
Containing nitrogen in chemical combination
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Saprobiotic digestion
digestion of protein to amino acids by decomposers - digestion involves hydrolysis catalysed by enzymes
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Saprobiotic nutrition
feeding on an organic substrate by secreting enzymes outside he body and then absorbing he products of digestion
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Other cards in this set
Card 2
Front
manufactured fertiliser such as ammonium sulfate
Back
Artificial fertilisers
Card 3
Front
the synthesis of organic compunds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals , typically in the absence of sunlight
Back
Card 4
Front
The removal of amino group from an amino acid or other compound
Back
Card 5
Front
Bacterium that gets its energy from by converting nitrate to nitrogen gas
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