1.2 Biogeochemical Cycles (Nitrogen)

Question 1

nitrgen cycle

Answer 1

the cyclic movement of nitrogen in different chemical forms between living organisms and the environment

Question 2

How is Nitrogen Cycle cycled

Answer 2

nitrogen gas

Question 3

Chemical formula of nitrogen gas

Answer 3

N2

Question 4

What is nitrogen a limiting factor of

Answer 4

plants

Question 5

What molecules are nitrogen important ingredients of

Answer 5

proteins and nucleic acids

Question 6

How many abiotic reservoirs does nitrogen have

Answer 6

2

Question 7

What are the 2 abiotic reservoirs of nitrogen

Answer 7

the atmosphere and soil

Question 8

Is nitrogen cycled globally or locally

Answer 8

both because its abiotic reservoirs are soil and the atmosphere

Question 9

How much of the atmosphere is nitrogen

Answer 9

SUPER BIG

Question 10

Can plants absorb nitrogen in its N2 form

Answer 10

no

Question 11

Nitrogen Fixation

Answer 11

the conversion of atmospheric nitrogen gas (N2) to nitrogen compounds (NH4+ and NO3-) that plants can absorb and use

Question 12

What organism does nitrogen fixation

Answer 12

bacteria

Question 13

Can animals use nitrogen in its N2 form

Answer 13

no

Question 14

What kind of atom is N2

Answer 14

a diatomic atom

Question 15

Diatomic Atom

Answer 15

an atom that always pairs with at least itself and is never found alone

Question 16

What is the first step of the nitrogen cycle

Answer 16

nitrogen fixation

Question 17

Legumes

Answer 17

beans

Question 18

Chemical formula of ammonia

Answer 18

NH3

Question 19

Chemical formula of ammonium

Answer 19

NH4+

Question 20

What is the third step of the nitrogen cycle

Answer 20

nitrification

Question 21

What form of nitrogen is usable by plants

Answer 21

nitrates and nitrites

Question 22

Chemical Formula for nitrates

Answer 22

NO3-

Question 23

Chemical Formula for nitrites

Answer 23

NO2-

Question 24

Are nitrites usable by plants

Answer 24

no

Question 25

how are organisms included in the nitrogen cycle

Answer 25

Plants use the nitrate to synthesize molecules such as amino acids, which make proteins and nucleic acids which make nucleotides herbivores gets the nitrogen to do the same thing but by eating plants carnivora eat other animals

Question 26

Where is nitrogen-fixing bacteria found

Answer 26

in soil, lagoons, and bean plants

Question 27

how do dead organisms contribute to the nitrogen cycle

Answer 27

Organisms that are not consumed eventually die and become detritus which is decomposed by prokaryotes and fungi. Decomposition releases NH4+ from organic compounds back into the soil, replenishing the soil reservoir of NH4+

Question 28

What is the last step of the nitrogen cycle

Answer 28

Denitrifying Bacteria strip the oxygen from NO3-, releasing N2 back into the atmosphere in low oxygen conditions

Question 29

What is dentrifying bacteria aka

Answer 29

Dentrifiers

Question 30

How do human activities also disrupt the nitrogen cycle

Answer 30

by adding more nitrogen than what is added by natural processes by combustion of fossil fuels and coal power plants which produce nitrogen oxides

Question 31

Nitrogen Oxides

Answer 31

NO and N2

Question 32

Outside of the nitrogen cycle how are some NH4+ and NO3-

Answer 32

in the atmosphere by chemical reactions including N2 and ammonia

Question 33

what are the things that can do nitrogen fixation

Answer 33

lightning and bacteria

Question 34

what is the second step of the nitrogen cycle

Answer 34

nitrification

Question 35

nitrification

Answer 35

NH4+ converted to NO2+ and then to NO3-

Question 36

ammonium

Answer 36

NH4+

Question 37

ammonia

Answer 37

NH3

Question 38

nitrate

Answer 38

NO3-

Question 39

NO2+

Answer 39

nitrite

Question 40

can nitrates be used by plants

Answer 40

yes

Question 41

ammonification

Answer 41

the process by which ammonia and ammonium ions are returned to the environment because they were released when nitrogen containing waste releases nitrogen

Question 42

compared to the other nutrient cycles, is the nitrogen cycle fast or slow

Answer 42

fast

Question 43

if there is more nitrogen present are plants madefaster or slower (more or less)

Answer 43

more and faster