Nitrogen Cycle

Question 1

Why it’s important

Answer 1

Used to form amino acids, the building blocks of proteins, the building blocks of DNA and RNA

Question 2

Five major transformations

Answer 2

Nitrogen fixation, Nitrification, assimilation, mineralization, and denitrification

Question 3

Biotic process
1

Answer 3

Nitrogen Fixation
(Biotic process) N2 ammonia to (NH3) ammonium done by cyano bacteria in the root of legumes

Question 4

Abiotic process
1

Answer 4

Abiotic process
Nitrogen fixation
Nitrite N2 to Nitrate (NO3-)

Question 5

2

Answer 5

Assimilation
Producers take up ammonium to nitrate
Consumer eliminate nitrogen by eating producers

Question 6

3

Answer 6

Ammonification
Decomposers break down N compounds into ammonium (NH4+)
The ammonuim can be converted into into nitrite (NO2-) and nitrate (NO3)

Question 7

4

Answer 7

Dentrification
Dentrifying bacteria convert nitrate (NO3) into nitrous oxide and evenually nitrogen gas

Question 8

Leaching

Answer 8

Negatively charged particles repel soil so nitrate is transported through the soil with the water. These settle at the bottom of lakes,oceans,swamps

Question 9

Effects

Answer 9

Increases atmospheric concentrations of fertilizer where it is applied
Alter distribution or abundance of species

Question 10

Sink

Answer 10

The atmpshere

Question 11

Souce

Answer 11

Ammonium sulfate, nitrates, urea, and ammonia