Nitrogen

Question 1

Nitrogen containing molecules

Answer 1

Amino acids
Porphyrins
Nucleotides

Question 2

Denitrification

Answer 2

Conversion of nitrates to nitric oxide and then to nitrogen gas

Reactions that return nitrogen into the atmosphere

Question 3

Ammonification

Answer 3

Conversion of organic nitrogen from animal waste to ammonia by decomposing bacteria

Question 4

Nitrification

Answer 4

Conversion of ammonia to nitrites then into nitrates

Reduction of nitrate into ammonia

Question 5

Nitrogen fixation

Answer 5

The incorporation of inorganic molecular nitrogen in the atmosphere first into ammonia then organic compounds used by the organism
Reduction of N2 to NH3 by bacteria

Question 6

Reduction of nitrogen fixation catalyzed by

Answer 6

nitrogenase enzyme complex

Question 7

N2 to ammonium ion electrons

Answer 7

6-electron reduction

Question 8

3 proteins involved in nitrogen complex

Answer 8

Ferredoxin
Dinitrogenase reductase (Fe-S; homodimer)
Dinitrogenase (Fe-Mo; heterotetramer)

Question 9

Atmospheric N2 triple bond energy

Answer 9

940 kJ/mol

Question 10

Harder process

Answer 10

Industrial process of producing ammonia from nitrogen and hydrogen
Uses an iron catalyst
High temp and pressure

Question 11

Uses of ammonia

Answer 11

Synthesize proteins
Fertilizer
Explosives
Mining
Rocket fuel