Nitrogen Cycle Flashcards
what percent of the atmosphere is nitrogen?
a. 78
b. 18
c. 5
d. 33
a. 78 (Most Abundant In Atmosphere)
which is not a way that humans intervene with the nitrogen cycle?
a. we remove nitrogen from topsoil by removing crops.
b. we upset balance by adding excess nitrates to bodies of water.
c. Our crop Plants remove large amounts of nitrogen from the atmosphere during photosynthesis
d. we release large quanities of nitrogen stored in soil and plants through deforestation.
e. anaerobic bacteria on livestock wastes and fertilizers
f. we add nitric oxides when we burn fuel at high temps.
c. Our crop Plants remove large amounts of nitrogen from the atmosphere during photosynthesis
bacteria in the soil and in the roots of some plants pulls nitrogen from the atmosphere.
True or False?
True
place these in order
(Atmos) Amm Ite Ate Gas
- Nitrogen gas is in atmosphere
- ammonia
- nitrite
- nitrate
- denitrifying bacteria produce nitrogen gas.
which is not true of the nitrogen cycle
a. bacteria play a huge role in the nitrogen
b. bacteria living in the roots of legumes pull nitrogen from the atmosphere
c. nitrogen easily transfers from the atmosphere to soil organisms
d. Nitrogen from animal wastes can fertilize plants.
c. nitrogen easily transfers from the atmosphere to soil organisms
taking my gray pass and going to the potty contributes to the nitrogen cycle.
True or False
True
volcanoes help move nitrogen to the soil
True or False
True
which of the following does not help add ammonia to the soil?
a. electrical storms/lightning
b. decomposing of dead organisms
c. volcanoes
d. Respiration by animals.
D. Respiration by Animals
Large amounts of nitrogen are stored in deep ocean sediments.
True or False
True
match the term to the definition
- denitrification
- nitrification
.
- Converting Nitrate to Atmospheric Nitrogen Gas
- converting ammonia to nitrite and then to nitrate
Plants and animals can directly utilize N2 from the atmosphere.
True or False
True
match the term to the definition
- producer
- consumer
- carnivore
- herbivore
- omnivore
- organisms that produce their own food’
- organisms that must consumer other organisms.
- organisms that must consume other animals
- organisms that consume only plants and algae.
- organisms that consumer plants/algae and animals.
What occurs in the absence of oxygen?
Dentrification: Nitrate to Nitrogen Gas
Organisms that gain their nutrients by breaking down organic compounds in the presence of OXYGEN do so by
Aerobic Respiration
(Aerobic means O2) (Anaerobic means no O2)
Which is not true of the nitrogen cycle?
A. Driven by bacteria
B. Legumes release nitrogen gas to the atmosphere
C. Humans upset the nitrogen cycle with agricultural runoff in surface water
D. Decomposers produce ammonia in the nitrogen Cycle
B. Legumes release nitrogen gas to the atmosphere
Legumes/Beans bring the nitrogen into the soil actually, not release it.
