Why do all living organisms require a source of Nitrogen?
To manufacture proteins, nucleic acids and other nitrogen-containing compounds.
1 of 5
Roughly __% of the atmosphere is made up of nitrogen?
78
2 of 5
Plants take up most of the nitrogen they need in the form of ___ ___ (__), which are absorbed using ___ ___ by the ___ ___?
Nitrate ions (NO3ֿ), active transport, root hairs.
3 of 5
Nitrate ions are very soluble, so easily ___ through the soil, beyond the reach of plant roots. In natural ecosystems, the nitrate levels are restored through recycling ___-___ ___?
leach, nitrogen - containing compounds
4 of 5
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5 of 5
Other cards in this set
Card 2
Front
Roughly __% of the atmosphere is made up of nitrogen?
Back
78
Card 3
Front
Plants take up most of the nitrogen they need in the form of ___ ___ (__), which are absorbed using ___ ___ by the ___ ___?
Back
Card 4
Front
Nitrate ions are very soluble, so easily ___ through the soil, beyond the reach of plant roots. In natural ecosystems, the nitrate levels are restored through recycling ___-___ ___?
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