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Cards In This Set
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Name the essential element for all living things?
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Nitrogen
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What are the 2 components of Nitrogen?
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Nucleic acids and amino acids
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What does an organism's survival depend on?
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Its ability to find and metabolize suitable forms of nitrogen
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What is the most predominant form of nitrogen on earth?
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Nitrogen gas
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The earth's atmosphere has about what percent of nitrogen gas?
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80%
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Can most organisms use nitrogen gas?
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No, we get our nitrogen from foods
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What other 4 places is nitrogen found?
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Ammonium, nitrite, nitrate and nitrous oxide
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What is the form preferred by plants?
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Nitrate
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Bacteria play a role in cycling nitrogen through its various 3 forms, name them?
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Soil, air and water
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Nitrogen-fixing bacteria convert nitrogen gas into what kind of form?
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Combined form of nitrogen or an organic form of nitrogen
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Members of ___ fix nitrogen and form symbiotic relationships with plants?
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Rhizobium
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The Rhizobium produces what to nourish the plant?
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Nitrogenous compounds
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T or F? The plant supplies other nutrients to nourish the bacteria?
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True
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Nitrogen-fixing bacteria can also be termed ___ living like members of the genus ___?
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Free, Azotobacter
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Nitrifying bacteria convert ___ to ___ and then to ___?
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Ammonium, nitrite, nitrate
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