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Biogeochemial cycle quiz

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

How many bonds does N2 have?

a)

Single

b)

Double

c)

Triple

d)

None

2.

What is A

a)

N2

b)

NH3

c)

H2O

d)

N3

3.

What is B

a)

Denitrification

b)

N2

c)

Nitrogen Fixation

d)

Nitrogen Abdsorption

4.

Atmospheric nitrogen is found in what form?

a)

N

b)

N1

c)

N2

d)

N3

e)

N4

5.

Where does the nitrogen atom spend most of its time

a)

Biosphere

b)

Lithosphere

c)

Hydrosphere

d)

Atmosphere

e)

Geosphere

6.

What does nitrogen Fixation mean?

a)

the first step in the process of making nitrogen usable by plants.

b)

the process by which ammonia is converted to nitrites (NO2-) and then nitrates (NO3-).

c)

(some free-living bacteria and fungi ) break down animal and plant proteins (from dead organisms) and nitrogenous waste products to release energy

d)

the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere

7.

What is Nitrification?

a)

the first step in the process of making nitrogen usable by plants.

b)

the process by which ammonia is converted to nitrites (NO2-) and then nitrates (NO3-).

c)

(some free-living bacteria and fungi ) break down animal and plant proteins (from dead organisms) and nitrogenous waste products to release energy

d)

the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere

8.

What does Decomposition Mean?

a)

the first step in the process of making nitrogen usable by plants.

b)

the process by which ammonia is converted to nitrites (NO2-) and then nitrates (NO3-).

c)

(some free-living bacteria and fungi ) break down animal and plant proteins (from dead organisms) and nitrogenous waste products to release energy

d)

the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere

9.

What does Denitrification mean?

a)

the first step in the process of making nitrogen usable by plants.

b)

the process by which ammonia is converted to nitrites (NO2-) and then nitrates (NO3-).

c)

(some free-living bacteria and fungi ) break down animal and plant proteins (from dead organisms) and nitrogenous waste products to release energy

d)

the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere

10.

What is the function of nitrogen and Phosphorous in our bodies?

a)

Amino acidsd

b)

DNA

c)

RNA

d)

Proteins

e)

All listed