Nitrogen cycle

Question 1

nitrogen fixation

Answer 1

N2 into any other N product (NH3, NH4+, NO2-, NO3-)

Question 2

denitrification

Answer 2

NO2- to N2

Question 3

ammonification

Answer 3

NH2 to NH3 or NH4+

Question 4

nitrification

Answer 4

NH3 to NO2- to NO3-

Question 5

rhizobium

Answer 5

found in: leguminous plants
convert: N2 –> NH3
purpose: uses NH3 to make amino acids used by plants

Question 6

azotobacter

Answer 6

free living bacteria
converts: N2 –> NH3
purpose: uses NH3 to make amino acids

Question 7

pseudomonas

Answer 7

found: water logged soil
converts: NO2- or NO3- –> N2

Question 8

nitrosomonas and nitrobacter

Answer 8

converts: NH3 –> NO2- –> NO3-