Introduction to the Nitrogen Cycle

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  • Created by: J.E.C.
  • Created on: 11-01-14 17:58
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
nbefh
nbefkvwf
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

Preview of the front of card 3

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 ___-___ ___?

Back

Preview of the front of card 4

Card 5

Front

nbefh

Back

Preview of the front of card 5

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