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- 1. Labeling
Identify the processes in the nitrogen cycle.
answer choicesIngestion
Assimilation
Nitrification
Nitrogen Fixation
Ammonification
Denitrification
tagsNitrogen Cycle - 2. Multiple Choice
How much of the atmosphere is composed of nitrogen gas?87%38%78%21%tagsNitrogen Cycle - 3. Multiple ChoiceIf the atmosphere is 78% N2, why can't we just get our nitrogen by breathing?We have no mechanism to break the triple bond of nitrogen between the atoms.Our lungs would be damaged by the N2.We need Oxygen for cellular respiration.The legumes take it up first.tagsNitrogen Cycle
- 4. Match
Match the following steps of the nitrogen cycle to how they move bacteria.
Nitrogen Fixation
Atmosphere to Geosphere
Assimilation
Geosphere to Biosphere
Ammonification
Biosphere to Geosphere
Denitrification
Geosphere to Atmosphere
tagsNitrogen Cycle - 5. Match
Match the following steps of the nitrogen cycle to how they move bacteria.
Atmosphere to Geosphere
Nitrogen Fixation
(Atmospheric nitrogen to ammonia in the soil)
Geosphere to Biosphere
Assimilation
(Soil to plants)
Biosphere to Geosphere
Ammonification
(Decaying organisms to the soil)
Geosphere to Atmosphere
Denitrification
(Soil to the air)
tagsNitrogen Cycle - 6. Multiple Choice
Plants and animals cannot use nitrogen directly from the air.
True
False
tagsNitrogen Cycle - 7. Multiple Choice
What converts nitrogen gas into a usable form for plants and animals?
bacteria
rain
fungi
car exhaust
tagsNitrogen Cycle - 8. Multiple Choice
According to this diagram, plants use nitrogen to make _________________________
bacteria
animals
proteins
decomposers
tagsNitrogen Cycle - Answer choicesTagsAnswer choicesTags